Federal prosecutors told a judge that they were deciding whether to seek the death penalty if Rahmanullah Lakanwal is convicted of killing a National Guard specialist.
In a letter to Interior Secretary Doug Burgum and national parks officials, several Democrats and a Senate independent said that members of the administration could face fines and even criminal prosecution.
A day after the National Symphony Orchestra played perhaps its final notes at the Kennedy Center for years, mixed martial artists brawled outside the White House.