WASHINGTON (AP) — At the White House, aides now routinely flout internal rules requiring face masks. The president's campaign is again scheduling mass arena rallies. And he is back to spending summer weekends at his New Jersey golf club.

Three months after President Donald Trump bowed to the realities of a pandemic that put big chunks of life on pause and killed more Americans than several major wars, Trump is back to business as usual — even as coronavirus cases are on the upswing in many parts of the country.

While the nation has now had months to prepare stockpiles of protective gear and ve...