He said border agents told him they needed to determine whether he and his wife were a national security threat to Canada.

Falk said they were asked a series of questions about his participation in the conference, his involvement in the Israel-Palestine conflict and his position on Israel. After about four hours, Falk said he and wife were eventually released and allowed to enter Canada.

Are we determining threats to Canadian national security by ascertaining people’s opinions of Israel now?

This shit sounds like the US law enforcement leaking into Canada, or a CBSA employee with a particular political predisposition.