No, all aircraft carriers are not named after Presidents. Historically, most have not been named after presidents.
Can we name a garbage scow after Obama? How about the S.S. Trashheap?
Right now Obama is still the commander of his “Queen’s Navy” along with Mabus the Pansy.
Soon Chicago will be missing another one of its’ leading village idiots since he and Mrs Wideload will be polluting DC for years to come, unless he is arrested, tried and convicted of treason. GITMO has a cell just for him, you know.