John McCainJohn McCainTrump's navy build-up comes with steep price tag 9 GOP senators Trump must watch out for Flawed Democratic idealism MORE's back-and-forth over whether he would use public financing for his campaign is bugging Jane Hamsher. She has complained to the Federal Election Commission that the Republican violated the primary spending cap he agreed to without being punished. In another post, Hamsher writes that Common Cause has the same worries, and has let McCain know about them.