A campaign finance law I could believe in

Evidently, our President chose to snarl LA traffic during rush hour so he could get some campaign money for the Democrats.  Apart from judgment reminiscent of Bill Clinton snarling LAX so he could get a $200 haircut, this gives me a thought about how one could rein in campaign finance spending.

Require those who use government facilities--Air Force One, Marine 1, the Secret Service, and so on--to pay the bills when government transportation and security is used to host partisan events.  If the Democrats had been charged the $40,000 per hour plus security costs of this event, maybe they'd have thought twice about snarling up LA traffic for it.