Let's just name everything after Trump:

The Gulf of Mexico = The Gulf of Trump
America: Trumperica
Canada: Trumpanada
Mexico: Trumpexico
Greenland: Trumpland
Washington, D.C. = Trump, D.C.
Panama = Trumpanama
New York: New Trump
Florida = Trumporida
Pennsylvania= Trumpsylvania
Texas = Trumpxas 
Etc.