IMO Mexico, Iran and North Korea are capable of some kind of attack. The prospect of a strong nationalist coming to power within 8 months leaves them that window to act before they would see a more decisive response or the opportunity vanish.
Lock and load while you can. Anyone preparing is doing something reasonable and prudent.
Don't be silly; they have no chance of attacking us. It's not like we would let ten million Mexicans, with who knows how many Iranians, just waltz across the border and go wherever they want in our country carrying whatever they . . . Never mind.