NEW: Capitol Hill is putting the birth tourism industry under the microscope. GOP lawmakers are examining businesses that are helping foreign nationals travel to the U.S. to give birth. When Rep. Mark Harris asks immigration policy expert Rosemary Jenks how sophisticated those operations have become, she points to a different problem. “Frankly, I don’t think they’ve had to become very sophisticated because it’s been so easy.” Jenks describes the industry as “huge,” saying it has received relatively little attention until recently. ▻