NEW YORK: Joe Biden on Friday used his first late-night television talk show appearance as US president to highlight his infrastructure bill — and laugh off his flagging approval ratings.

Biden’s appearance on NBC’s “The Tonight Show Starring Jimmy Fallon” is the first by a sitting president since Barack Obama, and comes as the White House seeks to highlight the recently passed bill for upgrading the nation’s tattered transport networks.

Despite its passage, Biden’s approval ratings have sunk to the low 40 percent area, in part due to the spike in inflation.

Asked by host Jimmy Fallon if he pays attention to approval ratings, Biden dead-panned: “Well, not anymore.”

“I’m joking. I was paying attention when it was in the mid-60s, but when it’s in the mid-40s I don’t pay attention,” said the president, to laughter from the studio audience.

Biden’s appearance by remote video comes after his predecessor President Donald Trump declined invitations for any late-night talk shows as president.