1 EXHIBIT 23.1 ARTHUR ANDERSEN LLP CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS As independent public accountants, we hereby consent to the incorporation by reference in this registration statement of our reports dated January 19, 1996 and January 26, 1996, included in CU Bancorp's Form 10-K for the year ended December 31, 1995 and Home Interstate Bancorp's Form 10-K for the year ended December 31, 1995, respectively, and to all references to our Firm included in this Registration Statement. ARTHUR ANDERSEN LLP Los Angeles, California April 19, 1996