Former US President Barack Obama wished President Joe Biden on his birthday, calling the latter his “friend and brother”.
“Happy birthday to my friend and my brother, @POTUS!” Obama tweeted.
Biden had served as Obama’s vice president during his eight years in office. They both have worked together for years in their political careers
In his tweet, Obama highlighted the passage of the bipartisan infrastructure bill that is seen as a major win for the Biden administration.
“Thanks for giving all of us the gift of better infrastructure. Grateful for all you’re doing to build this country back better,” Obama added.
The US president, who spent the day in his hometown of Wilmington, Delaware, had no public events scheduled.
Biden is the oldest president in US history.