https://www.foxnews.com/opinion/gregg-jarrett-why-trumps-preemptive-strike-irans-nuclear-facilities-legal-likely-saved-lives
"When the U.S. invaded Afghanistan, several Al Qaeda leaders fled to neighboring Iran where they were given safe haven. This included Usama bin Laden, who was harbored by the mullahs while he plotted even more attacks against Americans.
On this basis alone, Trump’s tactical military strikes against Iran’s nuclear enrichment facilities were legally authorized and constitutionally justified. No advanced consultation or approval by Congress is required. The AUMF carries no expiration date. It has never been repealed, refined or amended. It remains in full force as a delegated power to the President."