A bipartisan package of anti-Big Tech antitrust bills faces significant opposition from centrist Democrats, one of the largest caucuses in Congress, who find themselves on the same side as the tech companies in a major legislative fight.

Many of them say some of the bills are too broad and could harm innovation, resulting in unintended consequences to consumers. They oppose a coalition of mostly Democrats and some Republicans who support the “hipster antitrust” movement, which aims to broaden the current definition of antitrust law.