The Coalition to End Homelessness has made it very easy for any U.S. citizen with ten minutes and an internet connection to take action to end homelessness. They will even place the call for you.
Call (preferably) or send an email through their website: http://cqrcengage.com/naeh/advocacy?0
They’ll ensure that the correct Congressional official hears your voice.
You can help house 40,000 more people next year!