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<SEC-DOCUMENT>0000950137-08-013222.txt : 20081029
<SEC-HEADER>0000950137-08-013222.hdr.sgml : 20081029
<ACCEPTANCE-DATETIME>20081028184458
ACCESSION NUMBER:		0000950137-08-013222
CONFORMED SUBMISSION TYPE:	DEFA14A
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20081029
DATE AS OF CHANGE:		20081028
EFFECTIVENESS DATE:		20081029

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			NUVEEN INSURED CALIFORNIA TAX FREE ADVANTAGE MUNICIPAL FUND
		CENTRAL INDEX KEY:			0001195738
		IRS NUMBER:				030487017
		STATE OF INCORPORATION:			MA
		FISCAL YEAR END:			0831

	FILING VALUES:
		FORM TYPE:		DEFA14A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	811-21212
		FILM NUMBER:		081145758

	BUSINESS ADDRESS:	
		STREET 1:		333 WEST WACKER DRIVE
		CITY:			CHICAGO
		STATE:			IL
		ZIP:			60606
		BUSINESS PHONE:		3129178146
</SEC-HEADER>
<DOCUMENT>
<TYPE>DEFA14A
<SEQUENCE>1
<FILENAME>c47232vdefa14a.htm
<DESCRIPTION>FORM DEFA14A
<TEXT>
<HTML>
<HEAD>
<TITLE>defa14a</TITLE>
</HEAD>
<BODY bgcolor="#FFFFFF">
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<DIV style="font-family: 'Times New Roman',Times,serif">

<DIV align="center" style="font-size: 14pt; margin-top: 12pt"><B>UNITED STATES<BR>
SECURITIES AND EXCHANGE COMMISSION</B>
</DIV>

<DIV align="center" style="font-size: 12pt"><B>WASHINGTON, D.C. 20549</B>
</DIV>

<DIV align="center" style="font-size: 18pt; margin-top: 12pt"><B>SCHEDULE 14A</B>
</DIV>


<DIV align="center" style="font-size: 12pt; margin-top: 12pt"><B>Proxy Statement Pursuant to Section&nbsp;14(a) of the Securities<BR>
Exchange Act of 1934 (Amendment No.&nbsp;&nbsp;&nbsp; )</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">Filed by the Registrant <FONT face="Wingdings">&#254;</FONT><BR>
Filed by a Party other than the Registrant <FONT face="Wingdings">&#111;</FONT>

</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">Check the appropriate box:

</DIV>

<DIV style="margin-top: 6pt">
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="3%" nowrap align="left"><FONT face="Wingdings">&#111;</FONT></TD>
    <TD width="1%">&nbsp;</TD>
    <TD>Preliminary Proxy Statement.</TD>
</TR>
<TR>
    <TD style="font-size: 0pt">&nbsp;</TD>
</TR><TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="3%" nowrap align="left"><FONT face="Wingdings">&#111;</FONT></TD>
    <TD width="1%">&nbsp;</TD>
    <TD>CONFIDENTIAL, FOR USE OF THE COMMISSION ONLY (AS PERMITTED BY RULE 14a-6(e)(2)).</TD>
</TR>

<TR>
    <TD style="font-size: 0pt">&nbsp;</TD>
</TR>
<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="3%" nowrap align="left"><FONT face="Wingdings">&#111;</FONT></TD>
    <TD width="1%">&nbsp;</TD>
    <TD>Definitive Proxy Statement.</TD>
</TR>
<TR>
    <TD style="font-size: 0pt">&nbsp;</TD>
</TR><TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="3%" nowrap align="left"><FONT face="Wingdings">&#254;</FONT></TD>
    <TD width="1%">&nbsp;</TD>
    <TD>Definitive Additional Materials.</TD>
</TR>

<TR>
    <TD style="font-size: 0pt">&nbsp;</TD>
</TR><TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="3%" nowrap align="left"><FONT face="Wingdings">&#111;</FONT></TD>
    <TD width="1%">&nbsp;</TD>
    <TD>Soliciting Material Pursuant to Section&nbsp;240.14A-11(c) or Section&nbsp;240.14a-12</TD>
</TR>

</TABLE>
</DIV>
<DIV align="center" style="font-size: 14pt; margin-top: 12pt"><B>NUVEEN INSURED CALIFORNIA TAX-FREE ADVANTAGE MUNICIPAL FUND (NKX)
</B>
</DIV>

<DIV align="center"><DIV style="font-size: 3pt; margin-top: 1pt; width: 100%; border-top: 1px solid #000000">&nbsp;</DIV></DIV>

<DIV align="center" style="font-size: 10pt">(Name of Registrant as Specified In Its Charter)</DIV>


<DIV align="center"><DIV style="font-size: 3pt; margin-top: 16pt; width: 100%; border-top: 1px solid #000000">&nbsp;</DIV></DIV>

<DIV align="center" style="font-size: 10pt">(Name of Person(s) Filing Proxy Statement if other than the Registrant)</DIV>



<DIV align="left" style="font-size: 10pt; margin-top: 6pt">Payment of Filing Fee (check the appropriate box):

</DIV>

<DIV style="margin-top: 6pt">
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="3%" nowrap align="left"><FONT face="Wingdings">&#254;</FONT></TD>
    <TD width="1%">&nbsp;</TD>
    <TD>No fee required.</TD>
</TR>

<TR>
    <TD style="font-size: 6pt">&nbsp;</TD>
</TR><TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="3%" nowrap align="left"><FONT face="Wingdings">&#111;</FONT></TD>
    <TD width="1%">&nbsp;</TD>
    <TD>Fee computed on table below per Exchange Act Rules&nbsp;14a-6(i)(4) and 0-11.</TD>
</TR>

</TABLE>
</DIV>

<DIV style="margin-top: 6pt">
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="4%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">1)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>Title of each class of securities to which transaction applies:</TD>
</TR>

</TABLE>
</DIV>
<DIV align="center"><DIV style="font-size: 3pt; margin-top: 16pt; width: 100%; border-top: 1px solid #000000">&nbsp;</DIV></DIV>


<DIV style="margin-top: 6pt">
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="4%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">2)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>Aggregate number of securities to which transaction applies:</TD>
</TR>

</TABLE>
</DIV>
<DIV align="center"><DIV style="font-size: 3pt; margin-top: 16pt; width: 100%; border-top: 1px solid #000000">&nbsp;</DIV></DIV>


<DIV style="margin-top: 6pt">
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="4%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">3)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>Per unit price or other underlying value of transaction computed pursuant to Exchange
Act Rule&nbsp;0-11 (set forth the amount on which the filing fee is calculated and state how it
was determined):</TD>
</TR>

</TABLE>
</DIV>
<DIV align="center"><DIV style="font-size: 3pt; margin-top: 16pt; width: 100%; border-top: 1px solid #000000">&nbsp;</DIV></DIV>


<DIV style="margin-top: 6pt">
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="4%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">4)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>Proposed maximum aggregate value of transaction:</TD>
</TR>

</TABLE>
</DIV>
<DIV align="center"><DIV style="font-size: 3pt; margin-top: 16pt; width: 100%; border-top: 1px solid #000000">&nbsp;</DIV></DIV>


<DIV style="margin-top: 6pt">
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="4%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">5)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>Total fee paid:</TD>
</TR>

</TABLE>
</DIV>
<DIV align="center"><DIV style="font-size: 3pt; margin-top: 16pt; width: 100%; border-top: 1px solid #000000">&nbsp;</DIV></DIV>


<DIV style="margin-top: 6pt">
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="3%" nowrap align="left"><FONT face="Wingdings">&#111;</FONT></TD>
    <TD width="1%">&nbsp;</TD>
    <TD>Fee paid previously with preliminary materials.</TD>
</TR>

<TR>
    <TD style="font-size: 6pt">&nbsp;</TD>
</TR><TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="3%" nowrap align="left"><FONT face="Wingdings">&#111;</FONT></TD>
    <TD width="1%">&nbsp;</TD>
    <TD>Check box if any part of the fee is offset as provided by Exchange Act Rule&nbsp;0-11(a)(2) and
identify the filing for which the offsetting fee was paid previously. Identify the previous
filing by registration statement number, or the Form or Schedule and the date of its filing.</TD>
</TR>

</TABLE>
</DIV>

<DIV style="margin-top: 6pt">
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="4%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">1)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>Amount Previously Paid:</TD>
</TR>

</TABLE>
</DIV>
<DIV align="center"><DIV style="font-size: 3pt; margin-top: 16pt; width: 100%; border-top: 1px solid #000000">&nbsp;</DIV></DIV>


<DIV style="margin-top: 6pt">
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="4%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">2)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>Form, Schedule or Registration Statement No.:</TD>
</TR>

</TABLE>
</DIV>
<DIV align="center"><DIV style="font-size: 3pt; margin-top: 16pt; width: 100%; border-top: 1px solid #000000">&nbsp;</DIV></DIV>


<DIV style="margin-top: 6pt">
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="4%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">3)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>Filing Party:</TD>
</TR>

</TABLE>
</DIV>
<DIV align="center"><DIV style="font-size: 3pt; margin-top: 16pt; width: 100%; border-top: 1px solid #000000">&nbsp;</DIV></DIV>


<DIV style="margin-top: 6pt">
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="4%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">4)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>Date Filed:</TD>
</TR>

</TABLE>
</DIV>
<DIV align="center"><DIV style="font-size: 3pt; margin-top: 16pt; width: 100%; border-top: 1px solid #000000">&nbsp;</DIV></DIV>


<P align="center" style="font-size: 10pt"><!-- Folio --><!-- /Folio -->
</DIV>

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<P><HR noshade><P>
<H5 align="left" style="page-break-before:always">&nbsp;</H5><P>
<DIV style="font-family: 'Times New Roman',Times,serif">


<DIV align="left" style="font-size: 10pt; margin-top: 12pt"><B>October&nbsp;29, 2008</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt"><B>To Nuveen Fund Shareholders:</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">We recently distributed proxy materials regarding the Annual Meeting of Shareholders to be held on
Tuesday, November&nbsp;18, 2008. Due to a programming error, for joint and certain other accounts, the
proxy card that was originally presented to you may not have contained all of the names of the
individuals or entities listed on your account.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">Please accept our apologies for this omission; a corrected proxy card has been included with this
mailing. If you have already submitted a proxy card, it is necessary for you to complete, sign and
date the new proxy card. Please note that if your shares are held jointly, each holder must sign
the proxy card in order for your vote to be counted at the Annual Meeting.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">If you need an additional copy of the Proxy Statement for the Annual Meeting or your Fund&#146;s Annual
Report, please contact/call
<FONT style="white-space=nowrap">(866)&nbsp;864-0471</FONT>.
</DIV>


<P align="center" style="font-size: 10pt"><!-- Folio --><!-- /Folio -->
</DIV>




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