How? If you’re talking about McConnell he’s in the Senate. Impeachment starts with the House. When we lost the House impeachment was completely predictable. You need a simple majority. McConnell did his job when the impeachment trial came to the Senate. Sessions recusal was all Sessions doing! Sessions was AG he had a job to do and refused to do it.
Ditch likes to interfere in the Senate elections of people who are likely to be too independent of his control.