Republican Senator Josh Hawley on Wednesday pledged to challenge Democrat President-elect Joe Biden's victory when Congress convenes to officially tally the electoral votes, which could trigger a lengthy debate in the Senate but has virtually no chance of overturning the results.

Mexican President Andres Manuel Lopez Obrador said on Monday his weekend call with U.S. President-elect Joe Biden was "very friendly" and that he expect relations to be positive with the new Democratic administration taking office in January.

MEXICO CITY (Reuters) -U.S. President-elect Joe Biden and Mexico's President Andres Manuel Lopez Obrador on Saturday committed to work on a humane strategy to regional migration by addressing its root causes in Central America and southern Mexico.

President Vladimir Putin said on Thursday he hoped U.S. President-elect Joe Biden would help resolve some of the difficult issues in relations between Moscow and Washington.

Hours after speaking with Republican Senator Mitch McConnell and vowing to try to work together, President-elect Joe Biden urged Georgians on Tuesday to oust McConnell as majority leader by electing the two Democratic candidates in Jan. 5 Senate runoffs.

Brazilian President Jair Bolsonaro on Tuesday congratulated U.S. President-elect Joe Biden for his Nov. 3 election victory, finally accepting the loss of Donald Trump, a political idol with whom he had sought to forge closer bilateral ties.

LANSING, Mich./WILMINGTON, Del. (Reuters) -President-elect Joe Biden delivered a forceful rebuke on Monday to President Donald Trump's attacks on the legitimacy of his victory, hours after winning the state-by-state Electoral College vote that officially determines the U.S. presidency.

Russian President Vladimir Putin on Tuesday congratulated Joe Biden on his victory in the U.S. presidential election, after Biden won the state-by-state Electoral College vote that officially determines the U.S. presidency, the Kremlin said.

WASHINGTON (Reuters) -Several senior Republican U.S. senators on Monday acknowledged Democrat Joe Biden as the country's president-elect after the Electoral College affirmed his victory, and rejected the idea of overturning the 2020 presidential election in Congress.

President-elect Joe Biden is considering appointing Gina McCarthy, who headed the U.S. Environmental Protection Agency in the Obama administration, as domestic "climate czar" in charge of coordinating climate policies across federal agencies, according to two people familiar with the plan.