Following an embarrassing security breach at the White House, one of the most closely protected buildings in the world, the Secret Service is said to be considering establishing new checkpoints to screen tourists in public areas near the presidential mansion.

Meanwhile, the man accused of scaling a security fence and getting into the president's home carrying a knife is scheduled to have his initial appearance Monday in federal court.Omar J. Gonzalez, 42, of Copperas Cove, Texas, is facing charges of unlawfully entering a restricted building or grounds while carrying a deadly or dangerous weapon.

The Army says Gonzalez served from 1997 until his discharge in 2003, and again from 2005 to December 2012, when he retired due to disability.The Secret Service tightened its guard outside the White House after Friday's security breach. Gonzalez is accused of scaling the White House perimeter fence, sprinting across the lawn and entering the building before agents could stop him.

President Barack Obama and his family were away at the time. Obama says he still has confidence in the troubled agency's ability to protect him and his family.Secret Service Director Julia Pierson has ordered increased surveillance and more officer patrols, and has begun an investigation into what went wrong.