House leaders' plan for swift action on a $2.2 trillion package to ease the coronavirus pandemic 's devastating toll on the U.S. economy and health care system ran into complications Friday as a maverick conservative threatened to delay passage until most lawmakers return to Washington for a vote.

With rare bipartisanship and speed, Washington is about to deliver massive, unprecedented legislation to speed help to individuals and businesses as the coronavirus pandemic takes a devastating toll on the U.S. economy and health care system.