WASHINGTON — President Trump and his allies insisted Saturday’s shooting at the White House Correspondents’ Dinner proves the need for his planned über-secure White House ballroom .

Since 1968, the celebrated dinner has been held at the Washington Hilton, a hotel complex about a mile and a half north of the White House. But due to the fact that it’s a hotel, suspect Cole Thomas Allen was allegedly able to book a stay and sneak weapons there.

That’s why Trump and his allies believe a secure ballroom facility is needed at the White House.

The president has long pushed for a White House ballroom with advanced security arrangements.…