10 USC 1034: (1) No person may restrict a member of the armed forces in communicating with a Member of Congress or an Inspector General.https://www.law.cornell.edu/uscode/text/10/10345 U.S. Code 7211: The right of employees, individually or collectively, to petition Congress or a Member of Congress, or to furnish information to either House of Congress, or to a committee or Member thereof, may not be interfered with or denied.https://www.law.cornell.edu/uscode/text/5/7211