Sen. Joe Manchin (D-W.Va.) delivered another blow to Joe Biden’s agenda Sunday, drawing a fiscal line that would significantly undermine one of Biden’s signature family-related policy proposals.

Manchin told the White House that Biden’s child tax credit proposal must include a “firm work requirement and family income cap in the $60,000 range,” Axios reported, which would “would dramatically weaken” Biden’s plan.

Conversely, Manchin’s proposal would save taxpayer money in the bloated $3.5 trillion spending package. Manchin and Sen. Kyrsten Sinema (D-Ariz.) have withheld support from the bill over the eye-popping price tag.

As Axios noted, progressive lawmakers — who want more social welfare spending, not less — will likely oppose Manchin’s idea. In its current form, Biden’s child tax credit plan would cost an estimated $1.6 trillion over 10 years.