A bipartisan coalition of 32 attorneys general is throwing its support behind six anti-Big Tech antitrust House bills being debated, adding weight to those who want to curb Silicon Valley’s influence.

The House legislation, which passed the House Judiciary Committee in June, includes six sweeping antitrust bills aimed at reining in tech companies such as Apple, Amazon, Google, and Facebook. It marks Washington’s most significant and serious attempt to reshape the technology industry.