Trump kept spending higher than he should have, but IMO he did so because it helped the economic transformation that he WAS being successful in implementing. I disagree that we will never know. That's like saying we'll never know if Reagan's economy was good. All indicators were clear, the economy under Trump was gangbusters, and that because of his policies.
Lowering regulation and taxes. Energy independence and dominance. Peace through strength and negotiation. You may not like his brashness and mean tweets, but those were things he pushed that caused the economic boom.
Much of the candy sold in the USA is made in Mexico.
Most simple things the USA uses should be made in the USA by highly automated equipment.