I can't sign a bill that would throw someone in jail for criticizing a politician.
I will not sign away your rights no matter how politically safe that might be.
I took a sacred oath to protect the Constitution -- and I will not go back on my word.
The true campaign finance problem is corrupt politicians who do favors to benefit a few in return for campaign funds. The cure is simple -- throw the bums out. But you wouldn't be able to say that before an election if I signed this bill.