WASHINGTON — President Donald Trump sought to paint a rosier picture of the coronavirus for the nation on Tuesday but conceded the pandemic is likely to “get worse before it gets better.”

Trump commented as he revived his daily briefings with an eye to halting a campaign-season erosion of support. The early evening event at the White House came as the next stage of the federal government’s response to the pandemic was being crafted on Capitol Hill.

Lawmakers and White House officials opened negotiations on a trillion-dollar-or-more “phase four” rescue package.