WASHINGTON — President Joe Biden ominously called China a “ticking time bomb,” warning “bad folks” can “do bad things,” according to a pool report of the Thursday fundraiser. The full context of Biden’s menacing forecast was not clear, though the pool report said he noted China’s high unemployment and aging population. “When bad folks have problems, they do bad things,” Biden said at the Park City, Utah, home of Mark Gilbert, a former US ambassador to New Zealand and Samoa. The 80-year-old president also said he wanted to have a “rational relationship with China,” declaring “I don’t want to hurt...