WASHINGTON (Reuters) – U.S. Democratic Senator Joe Manchin from West Virginia slammed fellow lawmaker Bernie Sanders late Friday over his attempts to garner support for President Joe Biden’s multi-trillion-dollar spending package in the latest example of infighting among key lawmakers over the plan.

Manchin sent a tweet expressing concern at the bill’s scope to respond to an editorial written by Sanders, an independent senator, Vermont.

A Sanders editorial urged West Virginia’s Charleston Gazette-Mail to support the Democratic Plan to Address Wealth Inequity and Soaring Pharmaceutical Costs. It also emphasized the need for a more expensive Healthcare System, as well as a better system of childcare.

“Senator Sanders’ answer is to throw more money on an already overheated economy while 52 other Senators have grave concerns about this approach,” Manchin said in a statement posted https://twitter.com/Sen_JoeManchin/status/1449148907032875015?s=20 on Friday on Twitter (NYSE:), slamming Sanders as an “out-of-stater.”

Senate Republicans, Kyrsten Silenza from Arizona and Kyrsten Manchin are not supportive of the bill. Sinema has told https://www.reuters.com/world/us/us-senator-sinema-rejects-vote-big-biden-package-before-infrastructure-source-2021-10-14 Democrats in the House of Representatives she will not vote for the package before Congress approves a separate, bipartisan $1 trillion infrastructure bill.

Sinema and Manchin snubbed the Biden plan’s initial $3.5 billion price tag to finance social programs as well as combat climate change. The president must balance the need to reduce the bill’s cost while still ensuring that progressive Democrats, who are also essential for passing it, remain in the loop.