At the same time Trump is upending the global economy in a futile attempt to eliminate America’s trade deficit, he’s essentially pressuring Congress to increase it. A larger budget deficit will require the government to borrow more money, which drives up interest rates. Higher interest rates mean a stronger dollar, which makes it more expensive for people in other countries to buy our products, cheaper for us to buy theirs, and thus the trade deficit widens. So cutting taxes, as Mr. Trump has told Congress to do, will drive up the budget deficit — and the trade deficit.