When I was in the military a retired Navy Senior Chief (E-8) was court martialed for sexual harrassment and busted down to an E-6. If you’re receiving a government retirement check, I believe the U.S.Congress can do anything it wants to punish you. IMHO.
Please, is there a Constitutional lawyer out there who can address this problem? How about Congressman BillyBob?
Some one will jump in. Receiving a pension for being president is not connected to removing him from office ex post facto. IMHO.
Apples and Oranges.
The retired naval officer was court martialed by the military, not Congress. He was reduced in rank as a military punishment, even though retired. That is the way of things in the military.
A former US President cannot be impeached by the House and tried or convicted by the Senate when no longer in office. Remember the punishment phase after conviction by the Senate is removal from office. You can’t be removed from an office you don’t hold. It’s a civilian process, not military.
And Congress has no constitutional authority to impeach and convict and remove from office an EX President. Only a sitting one.