U.S. border authorities arrested 210,000 migrants attempting to cross the border with Mexico in March, the highest monthly total in two decades and underscoring challenges in the coming months for U.S. President Joe Biden.
COVID-19 vaccine candidates developed by a Sinopharm subsidiary and Sinovac Biotech (SVA.O) to target the Omicron variant were approved for clinical trials in Hong Kong, the companies said on Saturday.