The debate on Senate Democrats' health care proposal began in earnest with harsh partisan sniping on both sides. Sen. Phil Gramm (R-Texas) invoked the threat of a filibuster, calling the bill floated by Sen. George Mitchell (D-Maine) "anathema to everything I believe is right for America." This prompted Hillary Rodham Clinton to call Gramm a political opportunist "ranting and raving about socialized medicine." The bill calls for employer mandates as a backup measure and aims to cover 95 percent of the population. No vote is expected before next Wednesday.