Bruce Krinsky has spent a decade perfecting a sweet spot for sales in the American living room: $900 sofas for shoppers wanting an upgrade over IKEA without splurging on Crate & Barrel. That formula turned TOV Furniture, the company he founded with his wife, into a business pulling in more than $100 million a year. Today, the 44-year-old with a high-school education is living in a Mediterranean-style house in Miami Beach with a fountain and swimming pool. But for Krinsky, achieving the American dream in the Trump era has been an odyssey. He struggled to stay ahead of changing U.S.…