So, I sent this, and I actually got a reply from my senator to me a month later via e-mail.

Thank you for contacting me regarding US Fish & Wildlife Service's proposed Constrictor Rule. I am glad to have the benefit of your views on this issue.
I appreciate your making me aware of the concerns you have if this specific rule is implemented. Currently, the agency is reviewing comments it received on the proposed rule to determine what changes should be made before issuing a final rule. It is my hope that the final rule will not adversely impact Mississippians. Be assured I will continue to monitor this issue as the rule-making process moves forward, and I will keep your views in mind if Congress considers legislation affecting constrictors after the final regulation is released. Please do not hesitate to contact me if I can ever assist you.

With best wishes, I am

Sincerely yours,
Roger F. Wicker
U.S. Senate
Probably typed by an assistant, but I've sent petitions before and I've never gotten a response. I thought it was cool.