Questions loom ahead of next spending push, like "what is infrastructure?"

Biden and his fellow Democrats hope to expand the definition of infrastructure beyond existing transportation architecture to include items aimed at tackling climate change and its effects, echoing the $2 trillion, 10-year “Build Back Better” proposal floated during his campaign.

That includes investments in electric vehicle charging stations, zero-emission buses and zero-carbon electricity generation by 2035, and directing dollars to minority neighborhoods and contractors, part of a pledge to increase racial equity.

Democrats have signaled they want to invest billions in creating and refurbishing affordable housing in any package and expand broadband internet access to all Americans, particularly in rural communities.

U.S. House of Representatives Speaker Nancy Pelosi said on Friday that she had directed senior Democrats to begin working with Republicans on a “big, bold and transformational infrastructure package.”