Iranian media say the parliament has approved a bill that designates all U.S. military forces as terrorist forces.
The legislation comes after lawmakers in Tehran last week approved a bill labeling U.S. troops in the Middle East as terrorist, a day after the U.S. terrorism designation for Iran's Revolutionary Guard went into effect.
The report by the semi-official ISNA news agency says 173 out of 215 lawmakers at the session voted for the bill on Tuesday.
The bill also demands the Iranian government take unspecified action against other governments that formally back the U.S. designation. Saudi Arabia, Bahrain and Israel have all supported the Trump administration's designation.
The U.S. on Monday said it will no longer exempt any countries from U.S. sanctions if they continue to buy Iranian oil.
