A joke from my nephew

One day in a cold New York winter, Trump looked outside his apartment and sees the words “Trump sucks ass” etched into in a snowy patch across the street. He sent someone down to investigate and it turns out it was written in pee. He ordered his staff to analyze it and they later came back with the results, leading to this exchange:
“Mr Trump, we’ve discovered through DNA it’s Pence’s urine”
“That’s great - we’ll nail the bastard for a public misdemeanor!”
“Sorry, sir but that’s not all…”
“What is it?”
“Well, you see, sir, um…”
“What!?”
"Um…it’s Melania’s handwriting."