I’ll ask you a question and if you answer I’ll answer yours.
Do you think the Founders and ratifiers of the Constitution contemplated giving the Federal Government unlimited, totalitarian powers in any area including commerce?
I don’t believe they expected the States to run foreign policy - including trade with foreign nations....why are weapons sales OK to regulate between nations and not other inter-nation trade?
Now, where does the Constitution say, or even address, that such trade and other foreign policy is left up to the States?
Even a lefty site like Vox understands the President's power under current law so I will provide a link so that you can educate yourself and quit wasting everyone’s time:
https://www.vox.com/2018/3/8/17097206/trump-tariffs-congress