http://usweekly.com/news/385/1815/18_US_Code_§_1752__Disrupting_an_Event_Under_Secret_Service_Protection_is_Illegal.html
Up to 10 years plus a fine from my reading...
https://www.law.cornell.edu/uscode/text/18/1752
Oops, I’ll try a link that isn’t US Weekly...
informative post, thanks!