Back in Europe, Biden tries to show allies US is with them

U.S. President Joe Biden poses for a photograph as he arrives at the La Nuvola conference center for the G20 summit in Rome, Saturday, Oct. 30, 2021. The two-day Group of 20 summit is the first in-person gathering of leaders of the world's biggest economies since the COVID-19 pandemic started. (Kevin Lamarque/Pool Photo via AP)

U.S. President Joe Biden poses for a selfie with medical personnel and other world leaders during a group photo at the La Nuvola conference center for the G20 summit in Rome, Saturday, Oct. 30, 2021. The two-day Group of 20 summit is the first in-person gathering of leaders of the world's biggest economies since the COVID-19 pandemic started. (AP Photo/Gregorio Borgia)

ROME — Nearly five months after President Joe Biden declared “America is back” on his first presidential visit abroad, the president’s challenge now that he’s back in Europe is convincing the world that America is here to stay.