Freedom of Religion Act of 2017 This bill amends the Immigration and Nationality Act to provide that an alien may not be denied U.S. entry, reentry, or admission, or any other immigration benefit because of the alien's religion or lack of religious beliefs. Nothing in this bill shall be construed to affect immigration law authority when exercised on a case-by-case basis with respect to an individual who a consular officer, an immigration officer, the Justice Department, the Department of State, the Department of Homeland Security, or the President determines may pose a threat to U.S. national security.