A new Annenberg Constitution Day survey found that 35 percent of U.S. adults cannot name all three branches of government, a figure that has changed little in recent years.

Only 65 percent correctly identified the executive, legislative, and judicial branches.

Freedom of speech was the only First Amendment right that a majority of respondents could name, but recognition fell from 79 percent to 73 percent in one year.

About a quarter of adults mistakenly identified the right to bear arms as a First Amendment protection, even though it is part of the Second Amendment, Study Finds has reported.

Most respondents correctly answered questions about birthright citizenship and constitutional protections for immigrants without legal status, at 76 percent and 56 percent respectively.