To begin with I suggest "dishonorable, liar".
An example is the recent swing by the Repuds in Congress from spending with the CARES Act (like a drunken sailor, 80% of which went the the 1%) and giving away money (like a foolish moron) with tax cuts for the rich (that have not trickled down much, if any, over the last 40 years) to their new talk about the national debt and deficits.
Another, was the spectacle of the recent jamming through of a new USSC Justice just weeks before the election after the Repuds claimed that they had to wait until after the next election when a Justice died a few more months before that election than the number of weeks before the election in the recent case. In this case the Chairman of the Judiciary Comm. had promised his voters and the nation, that he would not hold hearings if a SC Justice died in the last year of a Trump Admin., and then did exactly that.
The makes him and all Repuds into dishonorable, liars.
Do you have any even stronger suggestions?