Pretty sure all of them will have forms that can be filled to allow access to felons with approval of the border services, it’s the case in Canada and is the process that Bush had to go through to visit and that Trump will have to go through to visit as well. He will be let in, but the paperwork will have to be filled.
Many nations do not allow convicted felons to visit. Italy is not one of them.
Pretty sure all of them will have forms that can be filled to allow access to felons with approval of the border services, it’s the case in Canada and is the process that Bush had to go through to visit and that Trump will have to go through to visit as well. He will be let in, but the paperwork will have to be filled.