WASHINGTON (AP) — President Donald Trump started his Labor Day with an attack on a top union leader, lashing out after criticism from AFL-CIO President Richard Trumka.

Trump tweeted Monday that Trumka "represented his union poorly on television this weekend." He added: "It is easy to see why unions are doing so poorly. A Dem!"

The president's attack came after Trumka appeared on "Fox News Sunday" over the weekend where he said efforts to overhaul the North American Free Trade Agreement should include Canada. Trumka, whose organization is an umbrella group for most unions, said the economies of...