LANSING, Mich. (AP) — A group that researches public policy in Michigan says it’s time to erase parts of the state Constitution that are no longer law.

The U.S. Supreme Court, for example, recently legalized same-sex marriage. The decision killed an amendment to the Michigan Constitution that recognized marriage as between a man and a woman.

The Citizens Research Council of Michigan says there are many parts of the constitution that have been overturned and have no legal standing. But they remain because only voters can remove them.

They include a voting age of 21, term limits for members of Congress and restrictions on who can vote on property taxes.

Eric Lupher of the Research Council says the constitution should “reflect reality.” The Legislature can ask voters to make changes in the document.