Markets wrestle with Trump's unconventional debt ideas

Investors are weighing whether Donald Trump might turn to unconventional ideas to try to bring the ballooning U.S. debt under control, after the president insisted he won't cut popular health and retirement benefits. Some of Trump's advisers have espoused unorthodox ideas in recent months, including forcing foreign governments to swap Treasuries for cheaper bonds in order to reduce interest payments and selling residency cards to rich foreigners at $5 million a pop. With many officials and economists saying that U.S. debt is on an unsustainable path, investors in U.S. bonds, currency and equities markets are starting to pay more attention…