Border challenge takes center stage at Biden's first White House news conference

The mounting challenges at the border crashed President Joe Biden's first formal news conference Thursday afternoon, derailing White House hopes of keeping the event focused on the administration's response to the coronavirus pandemic.

The White House had made an advance effort to spotlight Biden's pandemic response, with a string of vaccination logistical funding announcements in the hours before it began. The president began the event by detailing a new vaccination target, after his initial goal of 100 million vaccines was reached last week.