Yes, they've been caught abusing multiple exploits.
Foreign trade is literally anything involving any person from any country that's not the US, any corporation that isn't based in the US, and anything involving any US citizen crossing the borders of the US and bringing anything back. The government has unconditional and unlimited authority to regulate and restrict all of it for any reason. There are absolutely zero limitations. The government can completely bar any foreign ownership of any US asset and any corporation that isn't registered exclusively in the US from doing any business at all with anyone within the borders of the US. It cannot possibly be a Constitutional issue.