WASHINGTON — A man spotted carrying a gun in the vicinity of the White House by plainclothes officers and agents was shot by law enforcement Monday after he opened fire on them near the Washington Monument, the Secret Service said. Secret Service Deputy Director Matt Quinn said plainclothes agents spotted the man around 3:30 p.m. in the area near the White House complex and saw the imprint of the weapon on him. The agents followed him briefly and contacted the uniformed officers. The unidentified man attempted to flee when uniformed officers with the Secret Service approached him. Quinn said the man fired at the officers, who returned fire. The alleged gunman was transported to a local hospital. Quinn said he had no information on the suspect’s condition. Quinn said emergency personnel also transported a minor who was shot but not seriously injured. Quinn said he could not say definitively that the bystander, who also was taken to a hospital, was struck by shots from the suspect’s gun.…