Donald Trump is expected to make a "major" announcement June 16. In advance, Jimmy Fallon on Wednesday laid out some pros and cons for Trump if he's actually going to run for president this time instead of just threatening to join the race.

Pro: His campaign will do well in the fly-over states. Con: His hair will do well in the comb-over states. Pro: He's received thousands of letters and phone calls urging him to enter the race. Con: They were all from Hillary Clinton. Pro: Trump insists this isn't some cheap publicity stunt. Con: It's a very expensive publicity stunt.

A very expensive publicity stunt indeed, but one that could give Fallon and all the other late-night comics plenty of material.