He’ll try to be President again.
Romney immediately defended Mueller.
https://www.sltrib.com/news/politics/2018/11/07/sen-elect-romney-says/
We really dodged a bullet in 2012.
.....and in the meantime he will be the new McCain.
How do you figure? His best chance would be to get elected President Pro Tem of the Senate and then hire some assassins.
Really, he’s too old to run again in 2024 and would have no chance in against Trump in 2020.