Are you worried about the direction U.S. science might be heading? The most important thing you can do now is to contact your Senators and Representative and tell them you are concerned about the future of science in America.
Be sure to include your own thoughts in order to personalize the letter. Make sure to include information about the name of your institution, your field of research, and where you recieve funding from.
If possible, send your letter to your Senator's and Representative's LOCAL office. It has a better chance of being considered there.