<DOCUMENT>
<TYPE>EX-99.N
<SEQUENCE>16
<FILENAME>dex99n.txt
<DESCRIPTION>CONSENT OF ERNST & YOUNG
<TEXT>
<PAGE>

                        CONSENT OF INDEPENDENT AUDITORS

We consent to the reference to our firm under the caption "Experts" and to the
use of our report dated November 5, 2002 in the Registration Statement (Form
N-2) and related prospectus and statement of additional information of the
Nuveen Insured California Tax-Free Advantage Municipal Fund filed with the
Securities and Exchange Commission in the Pre-effective Amendment No. 2 to the
Registration Statement under the Securities Act of 1933 (File No. 333-100323)
and in this Amendment No. 3 to the Registration Statement under the Investment
Company Act of 1940 (File No. 811-21212).

                                                           /s/ ERNST & YOUNG LLP

Chicago, Illinios
November 20, 2002

</TEXT>
</DOCUMENT>
