A wall with Canada? The idea came up during a Republican presidential debate, from a candidate insisting his party’s border policies aren’t tough enough.

Entrepreneur Vivek Ramaswamy brought it up unprompted on Wednesday night in Miami.

Bombing drug labs in Mexico has become an increasingly popular idea in his party, along with building a wall along the southern U.S. border.

But Ramaswamy said these policies don’t go far enough. He lamented that the northern border does not get discussed as often as it should.

“I’m the only candidate on this stage, as far as I’m aware, who has actually visited the northern border,” Ramaswamy said, on the tail end of remarks about border security.