If Trump stays politically active, then maybe he can convince prosecutors that going after him would be political persecution and a violation of the First Amendment.
Dumb argument, since no one’s above the law and certainly many other politicians who have been investigated and prosecuted for crimes haven’t been able to successfully invoke that defense. And Trump’s crimes at this point surpass those of scandalous politicians past, even Nixon — that’s just the stuff we know about too. New stuff still continues to surface, like the Trump DOJ surveillance scandal that just broke. A literal copy-pasted, plagiarized page out of Nixon’s playbook.