A bipartisan Senate antitrust bill aimed at reining in Big Tech is gaining momentum, leading to accusations that it imperils certain popular Amazon, Google, and Apple products.

The legislation, introduced last October, would forbid dominant online platforms from recommending or boosting their own products and services, a practice known as self-preferencing. The bill would make it illegal for the Big Tech platforms to discriminate against other businesses that use their platform in a manner that meaningfully harms competition.