Did Donald Trump ask Attorney General Jeff Sessions to drop a criminal case against Joe Arpaio to repay a political favor?

That's a pretty simple question.

Jeff Sessions refuses to answer.

Feinstein: Did Trump ask you whether Arpaio's criminal case could be dropped?

Sessions: "I cannot comment..."

Which means we know the answer.

Which means there's a smoking, no, on fire, gun that Trump interfered in a criminal investigation.