Biden under fire from Republicans as 10,000 migrants converge under Texas bridge – live

• Thousands create makeshift camp amid intense heat
• Republicans blame White House for alarming conditions
• Sign up to receive First Thing – our daily briefing by email

5.49pm BST

The Guardian’s Jessica Glenza and Eric Berger report:

Scientific advisers to the Food and Drug Administration (FDA) will debate the safety and efficacy of recommending a booster shot for fully vaccinated Americans who received the Pfizer vaccine.

Related: FDA advisers to debate safety of recommending Pfizer booster shots

5.34pm BST

Dr Vivek Murthy, the US surgeon general, noted the final recommendation from the Centers for Disease Control and Prevention on booster shots will come next week, after the agency’s vaccine advisory panel meets to discuss the proposal.

“This process is consistent with what we outlined in August, where our goals were to stay ahead of the virus, to lay out an initial plan based on our clinical judgement and to ultimately ensure that the final plan would be based on the independent assessment and recommendations of the FDA and CDC,” Murthy said.

U.S. Surgeon General Vivek Murthy says a CDC advisory committee will meet next week to discuss booster shots, “after which the CDC will make their final recommendation.” He says the plans for distributing the shots will be “ready to go” https://t.co/H87a2BfUQk pic.twitter.com/94pJYVccdT

Continue reading…