Sen. Jon Tester of Montana Last year, shortly after he was elevated to lead the Democratic Senatorial Campaign Committee, Sen. Jon Tester of Montana explained on MSNBC how Keystone XL pipeline supporters could box in President Obama so that he would have to sign the Republican's Keystone legislation. “If we had in that pipeline bill to keep the energy here in the country, I can't see how the president would veto it to be honest with you — because I think it would provide some real benefits here to the country and to the job market here.” Unfortunately for Sen.