Donald Trump called for term limits for members of Congress on Tuesday, saying it would help "drain the swamp" in Washington.

"If I am elected president, I will push for a constitutional amendment to impose term limits on all members of Congress," Trump said at a rally in Colorado Springs, Colorado, to a roar of approval from the audience.

He said that U.S. House members should be limited to six years of service and that senators should be limited to 12 years, speaking in a separate rally in Grand Junction, Colorado. The proposal faces potentially insurmountable obstacles. A federal constitutional amendment would be required to impose term limits, and thus far Congress has lacked the votes to send a proposal to the states for ratification.