Dexter is not going to put up a fight.
Although that final night of freedom skit before someone was going to hang him out to dry... Was it Doakes? That was before Harrison... Dexter now has a life worth protecting. What I'm going to say next might seem a little crazy, but the only reason that the law exists is because it's too difficult to kill all the law enforcement services and then the army... Have you seen The Walking Dead recently? Actually winning the presidency might be easier.
But if it's just a question about the dissemination of information, he should be able to kill the idea before it spreads if even only a few dozen cops know. It's not until his name is in the system does that he has any real issues.