NEW DELHI - When news broke Monday that the Trump administration would restrict some types of work visas through the end of the year, software engineer Poorva Dixit was giving a remote presentation from Mumbai to her colleagues at a digital health-care firm in California. She was so distressed that she froze. A co-worker took over the meeting.

WASHINGTON - President Donald Trump issued a proclamation Monday barring many categories of foreign workers and curbing immigration visas through the end of the year, moves the White House said will protect U.S. workers reeling from job losses amid the coronavirus pandemic.