Does Congress have the power to remove a former President's

[Lithos]

7. Agreed

You could add a clause about maintaining the dignity of the office afterward and remove any and all benefits if one of several conditions were met - including felony conviction. But I think Congress would not do so as it might be added to a reason why they would lose their own benefits. However, I could easily see them extending the same forfeiture clause they have to the Presidential benefits, namely committing one of these felonies whilst in office:

1.bribery of public officials and witnesses;
2.acting as an agent of a foreign principal while a federal public official;
3.fraud by wire, radio, or television, including as part of a scheme to deprive citizens of honest services;
4.prohibited foreign trade practices by domestic concerns;
5.engaging in monetary transactions in property derived from specified unlawful activity;
6.tampering with a witness, victim, or an informant;
7.racketeer influenced and corrupt organizations;
8.conspiracy to commit an offense or to defraud the United States;9.perjury; or
10.subornation of perjury

I somehow think that one or more States would be able to convict multiple points once Trump is out of office.