Mitt Romney's Swiss bank accounts and Cayman Island investments were hot topics on the opening night of the Democratic National Convention, with several leading Democrats hammering the Republican presidential candidate about them in their speeches.

"Mitt Romney has so little economic patriotism that even his money needs a passport," charged former Ohio Gov. Ted Strickland in his fiery speech Tuesday night. "It summers on the beaches of the Cayman Islands and winters on the slopes of the Swiss Alps. In Matthew, chapter 6, verse 21, the scriptures teach us that where your treasure is, there will your heart be also. My friends, any man who aspires to be our president should keep both his treasure and his heart in the United States of America. And it's well past time for Mitt Romney to come clean with the American people."