They have alredy lost before they even start because the Supreme Court has already ruled that the federal government has no authority to institute a "gun free zone" around schools.
But they still claim them........
...Unless the gun in question has ever crossed state lines. My understanding is that Clinton got the federal gun free zone law re-instated under interstate commerce B.S.
See my post at #50 for my response to anyone who thinks these restrictions can't happen.