John McCainJohn McCainTrump wall faces skepticism on border No Congress members along Mexico border support funding Trump's wall Treasury won’t grant Exxon drilling waiver for Russia 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.