See, for example, The International Emergency Economic Powers Act: https://en.m.wikipedia.org/wiki/International_Emergency_Econ...
Edit, to add: I don’t think the IEEPA applies here, but there are a number of Congressional Acts that give the President and Federal Government tremendous power to regulate State goings-on. This was just the first one I could think of.
Dod medical stockpiles: https://www.defense.gov/Explore/News/Article/Article/2115200...
emergency hospitals: https://www.dailymail.co.uk/news/article-8144037/National-Gu...
Navy ships: https://thehill.com/policy/defense/489020-navy-hospital-ship...
You are just spreading lies. Monday is not today, but it is quite close, and the ships were undergoing repairs, as trump said.
Will you give me the benefit of the doubt and read the article? What lie did Trump tell? At no point did he claim the ships were already present at their destinations.