Just sent in this letter.
Dear Senator Nelson,
In response to your decision to harm Nebraska's agriculture and citizens by voting against the free market principles of cap-and-trade, all I can say is, enjoy your coming retirement. You have no base, so I hope you're not planning to run again.
Oh, and also this:
(Please picture me with my thumbs in my ears and fingers waggling in the air at your hatred for science and for Nebraska while my tongue makes that noise.)