Installing security checkpoints around White House under discussion

After a security breach on Friday, experts are suggesting that the White House and Secret Service agents need more vigilance about intruders.  On Friday, a 42-year-old military veteran jumped the White House fence and made it to the front door of the White House before Secret Service agents apprehended him.  The White House has heavy surveillance at all times, so authorities are questioning how someone was able to break through and enter restricted areas.  The intruder was armed with a knife, but agents reported that he did not appear to be a threat and that he also appeared mentally unstable.  Less than 24 hours after this incident, another person refused to leave the White House gate area and had to be detained for questioning.  The two incidents did not appear to be related. 

CBS News story