COVID-19 rates are plunging among migrants crossing the border from Mexico as the Biden administration faces a decision to end or extend sweeping restrictions on asylum that are aimed at limiting the virus’ spread.

Migrants are once again seeking asylum in Canada after the country lifted a 20-month ban.

The U.S. recommendation to “pause” use of the single-dose Johnson & Johnson COVID-19 vaccine set off a chain reaction worldwide and dealt a setback to the global vaccine campaign.