Subject: Re: SCOTUS rules Trump's Tariff's Illegal!
A report I saw about that said he can only impose that tariff by decree for 150 days. After that, he needs Congress to go along.

That's correct. Although it would not shock me if they impose the tariff for 150 days, waited a day, and then tried to re-impose it - arguing that they can have successive temporary tariffs. They tried a similar argument with their appointments to interim U.S. Attorney positions. The courts didn't accept that, and the might not again. But it would not surprise me if they tried.