Most of Sessions’ former colleagues are remaining on the sidelines of the crowded primary, and the National Republican Senatorial Committee will remain neutral.

…Sessions said he did not regret recusing himself from the Russia investigation — a decision Trump remains furious over. But he did push back on the impeachment inquiry Trump faces in the House, saying that the president has faced a “continuous political attack” but that Trump “conducted himself in this matter within the law” in his dealings with Ukraine.

…The other candidates have already signaled a willingness to attack Sessions directly. Tuberville put out a video shortly ahead of Sessions’ announcement showing news clips of Trump criticizing his former attorney general. 

…Jones brushed off any concerns about Sessions entering the race, saying of the GOP primary: “They’re the ones that are running around with their hair on fire. It doesn’t affect anything that we’re doing.”

Standing between Jeff Sessions and the Senate is a certain Donald Trump – POLITICO

hmmm