Trump said, "if countries are going to have nukes, we're going to be at the top of the pack."
What purpose is there for that when we've already reached the point where we can nuke the entire world more than twice?  The only one I can think of is blatant political rhetoric, aka a personal e-peen issue.

I can just see the situation in the WH.
T: "They've got more than we do."
M: "We've got better, smarter weapons."
T: "But it isn't enough."
M: "It is more than enough to nuke everyone on Earth.  Twice in case the first one missed."
T: "We are going to at the top of the pack!"
M (muttering): "Maybe someone forgot to take their medication this morning."