President Donald Trump has vowed his historic tariff blitz would revive domestic manufacturing, but industry worries about his approach are raising fresh doubts about whether he can deliver on his promise of an economic boom.

In the Rose Garden on Wednesday, Trump declared “jobs and factories will come roaring back into our country” and predicted new “golden age” in America. Since then, he has stood by his decision to hike US tariffs to their highest levels in more than a century, even as the move sparked a global market meltdown.