; and (ii) has certified to the appropriate congressional committees and leadership that the President does not anticipate introducing United States forces into hostilities or into situations where there is a serious risk of hostilities for a substantially similar purpose. (c) (1) If the Congress does not enact a specific statutory authorization for the use of United States forces under subsection (b) within 20 days of the introduction of such forces into hostilities or a situation where there is a serious risk of hostilities, the President shall withdraw, remove, or otherwise cease the use of such forces. (2) The 20-day period described in paragraph (1) shall be extended for not more than an additional 10 days if the President determines and certifies to the Congress in writing that unavoidable military necessity respecting the safety of such forces requires the continued use of such forces for the sole purpose of bringing about the safe removal of such forces. (d) (1) (A) If the Congress does enact a specific statutory authorization for the use of United States forces under subsection (a) or (b), the President shall submit to the appropriate congressional committees and leadership a report in writing on the use of such forces— (i) not less frequently than every 30 days