Sen. Joe Manchin (D-W.Va.) on Wednesday said that he’s not sure if he supports ramming another package through Congress after some in his party have tried securing a commitment from him in exchange for voting for the bill a bipartisan group that includes him came out with. “If they don’t like it, they should vote against it,” Manchin told reporters on Capitol Hill. “That should not be conditional. It should be based on the merits of what the bill is.” A bipartisan group that includes the likes of Manchin and Sen. Mitt Romney (R-Utah) announced last week that they reached a deal on infrastructure, pending White House approval. But a segment of the Democratic caucus is growing frustrated with how long infrastructure negotiations are taking, and don’t want to wait for the bipartisan group to negotiate with President Joe Biden and administration officials. They want Manchin and Sen. Kyrsten Sinema …