“Corporate” Democrats in the Senate imperil Joe Biden’s Build Back Better Act, a leading House progressive warned – but not just Joe Manchin and Kyrsten Sinema, the targets of most leftwing ire.

Such Democrats, Rashida Tlaib of Michigan said, are influenced by donors who “don’t have the best interests of the American people in mind”.

At the same time, the New York Times reported that Manchin and Sinema are increasingly receiving money from corporate and conservative donors.

The president’s domestic spending package is worth $1.75tn and seeks to increase spending on social programs and healthcare and to combat the climate crisis.

After months of negotiation, and after Biden signed into law a $1.2tn bipartisan infrastructure bill, the House of Representatives passed Build Back Better on Friday.

There was no Republican support and there will be none in the Senate. That gives Manchin of West Virginia and Sinema of Arizona huge influence, in a chamber split 50-50 and controlled by the vote of Vice-President Kamala Harris.

The two senators have already pressured the Democrats to cut the cost of the spending plan in half.