(Bloomberg) -- Senator Joe Manchin told Democratic leaders Thursday he would not support new spending on climate measures or tax increases, delivering a colossal blow to President Joe Biden’s ambitious economic agenda. Manchin’s vote is pivotal in the evenly divided Senate, where Democrats need a united caucus to pass the economic package by simple majority under special budget reconciliation rules. “I was talking about inflation before it was even thought about,” Manchin told reporters. The move comes seven months after Manchin killed Biden’s plans for a grand economic bill totaling some $2 trillion and including many progressive priorities. Recently, Schumer had offered to Manchin a $375 billion package of energy and climate provisions as well as support for permitting changes sought by Manchin but Manchin said no.