Last night, four U.S. Connecticut Senate candidates debated issues from unemployment to health care in the Washington Room of Mather Hall at Trinity College.  Among the highlights, Rob Simmons announced that he is actively campaigning for the GOP nomination in the Connecticut Senate race.  Simmons joined John Mertens, the nominee of the Connecticut for Lieberman Party and a Trinity professor; Warren Mosler, the nominee of the Independent Party; and Republican challenger Peter Schiff in a debate moderated by Chris Powell, editor of The Journal-Inquirer of Manchester.  The sponsoring group was the Federation of Connecticut Taxpayer Organizations.