SALT LAKE CITY – President Barack Obama declared Tuesday night the occupant of the Oval Office must “work for everyone, not just for some,” jabbing back at Mitt Romney’s jarring statement that as a candidate, he doesn’t worry about the 47 percent of the country that pays no income taxes.

Romney neither disavowed nor apologized for his remarks, which included an observation that nearly half of the country believe they are victims and entitled to a range of government support. Instead, Romney cast his comment as evidence of a fundamental difference with Obama over the economy, adding the federal government should not “take from some to give to the others.”

As the rivals sparred with seven weeks remaining in a close race for the White House, two GOP Senate candidates publicly disavowed Romney’s remarks, caught on videotape at a fundraiser. Republican officials openly debated the impact that a series of controversies would have on the party’s prospects of winning the presidency.