After Donald Trump won the presidency again, Rebecca Carlson was counting on this being the year things turned around for her 1,300-acre farm in northern Michigan. The farm has been in her family for generations but has struggled over the past several years amid the rising cost of fuel, fertilizer and other operating expenses. Then, last year, bad weather wiped out much of her crop. But the return of Trump, she thought, would help reverse things. Her farm had been awarded a grant worth $400,000 through the U.S. Department of Agriculture to help pay for the costs associated with hiring...