No it was Lazio voting on legislation in which he had a financial interest.
You obviously have no idea what's in the Constitution. It may be unethical, if he in fact did that, but it's not unconstitutional. What exactly was his financial interest and what was the vote on?
I assume you're real worked up about Hillary Clinton representing Madison Guaranty Savings and Loan before the Arkansas state banking commission and persuading them not to shut it down while her hubby was Governor, (which eventually cost a few billion extra in taxpayer's money to bail it out). Madison, owned by their friends the MacDougals, had sunk huge amounts of money into the Whitewater development, also owned primarily by the MacDougals, and in which the Clintons had a direct financial interest.
I'll bet you would never vote for Hillary Clinton because of that, eh?
You were probably PO'd about Clinton pardoning Marc Rich after his wife had given huge $ to Clinton's campaigns also. If Clinton ran for say, California Governor, I'll bet you would never vote for him because of that.