Group backing Iowa's Ernst hit with complaint after AP story

An election watchdog filed a complaint Thursday alleging than an outside group founded by top political aides to Iowa Sen. Joni Ernst violated campaign finance law in its effort improve the Republican's chance of reelection next year.The complaint, filed with the Federal Election Commission by the nonpartisan Campaign Legal Center, comes after The Associated Press reported earlier this month that Ernst's work with the political nonprofit Iowa Values to raise money and build an electoral “f