For years, there have been efforts for a new U.S. Canada bridge near Detroit. Donald Trump has added a new chapter to the saga.

President Trump’s threat to block the opening of the new crossing is the latest in a long string of challenges for the project.

President Donald Trump threatened Monday to block the opening of a new bridge connecting the US and Canada, again lashing out at his country’s northern neighbor over a range of economic issues as the rift between Washington and Ottawa deepens.

The Gordie Howe International Bridge, expected to open early this year, was built by Canada to ease cargo transport between Detroit and Windsor, Ontario.