Washington DC - The role of first lady is "a little harder" than expected, Jill Biden said in a televised appearance that aired on Sunday.

President Joe Biden joined his wife for part of the CBS Sunday Morning segment that took a sympathetic look at the lives of the first couple.

"I think it’s a little harder than I imagined," Jill Biden (70) said of her position as first lady. "It’s not like a job that you do. It’s a lifestyle that you live. It’s 24 hours a day."

The president grew emotional and appeared to tear up briefly as he described his wife’s practice of greeting him from the White House balcony whenever he returns from trips.

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"Smile," she told him, prompting the commander in chief to flash a grin.

"She says, 'Joe, you’re too emotional. You get too emotional.' She’s right," the president said.

The first lady also shut down questions about the 79-year-old president’s mental fitness, saying: "I think that’s ridiculous."

Over the interview, Jill Biden touted the country’s massive vaccination effort and the recently passed $1-trillion dollar infrastructure deal, defended her husband’s record in office, and downplayed his slumping approval rating, which is about 43%, according to a FiveThirtyEight analysis of poll numbers.

Asked whether she thinks his ratings will improve once his accomplishments sink in with the public, she said: "I do."

"He did come in and rescue America with the American Rescue Plan," Jill Biden said in a reference to legislation in March that provided relief checks to many Americans and sent billions of dollars to localities.

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The first lady, a community college teacher, gave a diplomatic response when asked about Democrats’ decision to remove a proposal for free community college from a massive social spending package under debate in Congress.

"I understand compromise and I knew this was not the right moment for it," she said. "But that doesn’t mean it might not get passed somewhere down the future."