Issue Tasers as sidearms for the staff.
All fixed.
I prefer the classics myself--1911 .45 ACP. Most of these idjits would be of some use to this nation as moving targets for patriots to refine their shooting skills while improving the gene pool.
Give the recruiters cannisters of tear gas and vomiting gas to detonate by radio control. When the scum enter and start their stuff, leave. When all the friendlies are accounted for, gas the cruds. They will soon become classically conditioned to stay very clear of recruiting stations, and all those liberal congresspeople who secretly hate this country will be holding hearings to find out why the local police did not control these incursions in the first place rather than let them get out of hand to the point where these little pinko punks got their feelings hurt.
Issue sidearms........
Tasers?
Issue 1911A1s.