President Trump says he has ordered his negotiators to stop discussing a new stimulus deal until after the election. His announcement sent stocks plunging and sparked new uncertainty among people in particularly hard-hit industries, like airlines. While Congress has butted heads for months over stimulus proposals, House Speaker Nancy Pelosi and Treasury Secretary Steven Mnuchin seemed to be mounting a strong new effort to get a deal done soon. Now, experts warn of what may happen to the economy with further aid still on hold. Meanwhile, Stephen Miller, a top Trump policy adviser, is the latest White House official to test positive for coronavirus. The White House said it has completed “all contact tracing” for positive Covid-19 cases among its ranks, but given the confusing and sometimes contradictory information released by the administration about the recent outbreak, doubt remains.