Biden, Macron vow unity against Russia, discuss trade row

U.S. ceremonial units ready before President Joe Biden welcomes French President Emmanuel Macron during a State Arrival Ceremony on the South Lawn of the White House in Washington, Thursday, Dec. 1, 2022. (AP Photo/Patrick Semansky)

President Joe Biden speaks as he welcomes French President Emmanuel Macron during a State Arrival Ceremony on the South Lawn of the White House in Washington, Thursday, Dec. 1, 2022. (AP Photo/Patrick Semansky)

President Joe Biden stands with French President Emmanuel Macron after a news conference in the East Room of the White House in Washington, Thursday. (AP Photo/Susan Walsh)

WASHINGTON — Presidents Joe Biden and Emmanuel Macron vowed to maintain a united front against Russia on Thursday amid growing worries about waning support for Ukraine’s war effort in the U.S. and Europe. Biden also signaled he might be willing to tweak aspects of his signature climate legislation that have raised concerns with France and other European allies.