U.S. President Joe Biden vowed to pass an infrastructure bill and a multi-trillion-dollar social spending bill through Congress even as he revealed his intention to travel more to secure support from the public.

Having admitted to criticism that he had not done more to shore support for the bills by traversing the country, Biden on Saturday said he was going to "work like hell" to get both bills through.

Biden, however, defended his lack of travel saying there were several reasons behind it, including his focus on hurricane and storm damage during recent trips, among other issues.

The travels, Biden said, will be to make a case for "why it's so important" to pass the bills and clarify what they contain.

"There's nothing in any of these pieces of legislation that's radical, that is unreasonable," Biden said.

"I'm going to try to sell what I think the people, the American people, will buy."

Biden was at the Capitol on Friday to try and end a dispute pitting moderates and left-leaning progressives in the Democratic Party. The dispute has threatened the two bills that constitute the core of his domestic agenda.

Moderate Democratic lawmakers wanted an immediate vote on a $1 trillion infrastructure bill in the House of Representatives that has already passed the Senate, while progressives want to wait until there is agreement on a sweeping $3.5 trillion bill to bolster social spending and fight climate change.

Biden expressed confidence that both bills would get passed but refused to be drawn into setting a deadline for when that would happen.

"I believe I can get this done," Biden added.

Biden told his caucus on Friday that they could delay a vote on the smaller bill and sharply scale back the larger one to around $2 trillion.

(With input from Reuters)