FILE - A vehicle crosses the International Rainbow Bridge from Niagara Falls, Ontario, into Niagara Falls, N.Y. on Wednesday, Oct. 13, 2021. A border crossing between the U.S. and Canada has been closed Wednesday, Nov. 22, 2023, after a vehicle exploded at a checkpoint on a bridge near Niagara Falls. The FBI's field office in Buffalo said in a statement that it was investigating the explosion on the Rainbow Bridge, which connects the two countries across the Niagara River. (Aaron Lynett/The Canadian Press via AP, File)