Is what still an issue? This is from the article

> Using a novel cross-industry design and the 1999–2003 expansion of the H-1B visa cap for identification, we find that H-1B exposure raised incomes for natives and pre-existing immigrants, with gains concentrated in non-STEM occupations. Income gains propagate forward through supply chains to downstream industries but not backward to upstream industries, consistent with a productivity shock rather than a labor supply shock.

It doesn't matter yet because it hasn't actually happened: Trump's declaration was (unsurprisingly) another attempt to do something dictatorial, in particular usurping the power of Congress to create a tax, making the plan unconstitutional as well as illegal in some lesser ways.

At least for now, the US court system has correctly called that out, and has blocked the attempt because it's not something a legitimate President can do.

It seems the case is Californa v. Mullin, and the latest status is that his staff have filed an appeal (2026-06-12) asking a higher court to undo their loss.