International desk: President Donald Trump says labor unions have an open door to his White House, but so far, he's holding the door a little more ajar for some organizations than others.
Trump has put out the welcome mat for the nation's construction trades, with whom he's had relationships during decades of building office towers and hotels. Also invited in have been auto, steel and coal workers who backed him during the 2016 election.
But there's been no White House invitation for other unions representing the sprawling but shrinking pool of 14.6 million workers who collectively bargain with employers in the labor movement.
