They are almost all cowards hiding behind a law that restricts the 1st Ammendment right to free speech. The elected reps in Congress and the POTUS are so weak and quiver at the sound of someone, anyone speaking in dissent of their policies or their conduct that they are now forced to hide behind a barbaric law that allows the secret service to prohibit free speech or redress of grievances anywhere they want.
see link: http://lewrockwell.com/napolitano/napolitano45.1.html
Can the Secret Service Tell You To Shut Up?
Our current group of politicians in Washington D.C. would be better suited for a place like communist China or maybe North Korea. Cowards like them don't deserve serving as reps of the people of the USA with a law like the Federal Restricted Buildings and Grounds Improvement Act of 2011.