Board members of the U.S. Institute of Peace, a private nonprofit created by Congress, filed a lawsuit seeking to halt what they call an illegal takeover by the Trump administration that steps on congressional power. The institute and five board members accused Trump administration officials — including the Department of Government Efficiency, Secretary of State Marco Rubio and others — of illegally taking over the institute, including a dramatic physical takeover of the building this week. The lawsuit, filed late Tuesday, detailed efforts from officials, which included enlisting private contractors, Washington police and the Justice Department, to gain access to...