If by manufacturing, you mean chemicals, pharmaceuticals, processed agricultural products, pulp&paper, and heavy industrial equipment. Electronics and consumer products manufacturing is dead in the US.
Dell and HP manufacture almost nothing in the US. Many/most of their products aren't even designed in-house. They contract with Asian design houses and slap their own bezel on the result.
You're right about Intel. They are one of the few significant electronics companies left in the US. But they aren't representative of the category.
