The future of President Joe Biden’s Build Back Better Act was a bit uncertain as of Tuesday afternoon.

While the sweeping legislation was passed in the House of Representatives two weeks ago, ironing out details of the legislation remains underway. 

For the most part, Democrats in the senate are on board with initiative but there are a couple of Democratic senators who have issues with parts of the plan.

The price tag for the plan has been estimated at about $1.75 trillion and includes spending that will go towards a free universal pre-kindergarten program, putting child care subsidies in place, reducing drug costs and making efforts to address climate change. 

Both Senator Elizabeth Warren and Senator Ed Markey are on board with the legislation. 

"The Build Back Better Act makes a generational investment in climate solutions that will reduce emissions, create millions of union jobs, and provide justice for communities such as Worcester, Chelsea, and Springfield that have suffered the worst impacts of pollution and the climate crisis,” Markey said in a statement to Spectrum News 1. 

Markey also said that he wants to see the legislation passed before a tentative deadline of December 25.

That is the same timeline being touted by majority leader Chuck Schumer.

Right now, part of the holdup with passing Build Back Better in the Senate is with two moderate Democrats.

Senator Joe Manchin of West Virginia and Senator Kyrsten Sinema of Arizona have both previously expressed concerns about certain parts of the legislation. 

Meantime, some Americans are becoming frustrated with the speed of the Senate negotiations over the bill.

Dozens of people, from places like Pennsylvania and New York, came to Washington on Tuesday and staged a protest outside of the Capitol.

Many of the participants identified themselves as immigrants who said that they were also hoping that a path to citizenship could somehow be added to Biden's Build Back Better plan. 

It's unclear whether that is even possible but discussions about how to craft the bill are still ongoing, according to Schumer.