PALO ALTO, U.S. -- Hours after becoming the 46th U.S. president, Joe Biden took charge and signed 15 executive orders, rolling back a host of Donald Trump policies while gearing up to tackle climate change and the deadly COVID-19 pandemic.
The centerpieces of his Day One actions were an order to rejoin the Paris climate accord and halt America's withdrawal from the World Health Organization. Biden's newly appointed press secretary, Jen Psaki, explained the moves and other plans in her first briefing on Wednesday evening.
