Almost all in Congress use Twitter; if only bills could be as short as tweets[ Wed, 23 Jan 2013 05:50:33 GMT ]All 100 members of the U.S. Senate now tweet, and 90 percent of the members of the House of Representatives send out 140-word bits and bites. (Why can't bill-writing be done with such brevity? The Affordable Care Act would have looked a lot different if it had said: "Everybody. Gets. Covered. The End.")  A look at the top members of Congress — according to Twitter.