Solar energy tax credits benefited firms owned by Tea Party Republican running for the US Senate. But Mark Neumann, who decries Obama stimulus plan, got the solar energy credits under President Bush.

Retirement savings plan – the 401(k) – would give clearer guidance on fees and offer retirees more options, according to new proposed rules. One proposal would allow part of a retirement savings plan to convert to an annuity.   

Mitt Romney cruised to a comfortable win over his GOP rivals in the Nevada caucuses Saturday. Following strong recent debate performances and his big win in Florida, that gives him momentum going into the next presidential nominating contests.

AP - Republican presidential front-runner Mitt Romney cruised to a decisive victory in the Nevada caucuses Saturday night, notching a second straight triumph over a field of rivals suddenly struggling to keep pace.

AP - Defeated in the Nevada caucuses, Newt Gingrich brushed aside all talk of quitting the Republican presidential race and said he hopes a series of victories will enable him to catch up with front-runner Mitt Romney by the Texas primary in early April.

AP - An American soldier shot and killed an Afghan guard at a base in the country's north, apparently because the American thought the guard was about to attack him, Afghan police said Sunday.