He can't change the Constitution with a Sharpie Pen in the Oval Office. But he can try.
Oops. If you read the US Constitution out loud (in this case regarding the US Census and Trump's 'Citizenship' Question) it turns out badly for their so-called president.
It's in the US Constitution, and it's not that complicated.
RoJo just hates that people have rights and the political inconvenience that makes.