Members of Congress are pressing the Department of Homeland Security to provide more information about a controversial social-media monitoring program, citing “privacy and civil liberties concerns.”

The lawmakers, the Republican and Democratic heads of a House counterterrorism panel, expressed support for the goal of the program, calling social media a “crucial source” of intelligence around the world. They said in a letter last month that it is “advantageous” for DHS to draw out information to “identify current or emerging threats to our homeland security.
But they also urged the department to “be mindful of the rights” of citizens to “express themselves online.”