The Trump administration is expanding the requirement for immigrants who are hoping to become US citizens to display “good moral character,” in a move that some immigration lawyers denounced as a troubling change that adds uncertainty to the naturalization process.

The new guidance gives U.S. immigration officers wide berth to deny immigrants benefits, including green cards and citizenship.

A new USCIS policy expands disqualifying offenses for naturalization, while directing officers to assess good moral character through positive attributes and civic responsibility.