Sen. John McCainJohn McCainMcCain leans toward voting for Tillerson Trump's navy build-up comes with steep price tag 9 GOP senators Trump must watch out for MORE (R-Ariz.) is continuing his call to end government corruption, which was also a central theme in his previous bid for the presidency.

In this campaign ad, McCain says, “We need lobbying reform, we need ethics reform, and we need a legislative reform