Apple CEO Tim Cook has contacted US House Speaker Nancy Pelosi and other lawmakers in an effort to sway opinion against the ratification of a set of sweeping antitrust bills that aim to rein in Big Tech, the media reported.

Citing sources, The New York Times reported that Apple’s chief executive phoned Pelosi and other members of Congress to warn them of potential pitfalls concerning a set of five proposals announced earlier this month.

According to the report, Cook cautioned that the bills were rushed, would stifle innovation, and would hurt consumers by wreaking havoc on Apple services.

He also requested that the Judiciary Committee delay its process of consideration, a funnel through which the legislation must pass before reaching the full House, AppleInsider reported.

With approval in the House, the bills would need to withstand Senate scrutiny before reaching the desk of the President.

Pelosi pushed back on Cook’s ask, the report said, pressing him to name specific policy objections on the proposed material.

Cook is not the only tech figure to voice opposition to the batch of antitrust laws.

Google’s senior vice president for global affairs Kent Walker has also made calls to lawmakers, while lobbyists and representatives for Amazon and Facebook have issued statements critical of the proposed measures.

This week, a group of think tanks and nonprofits, many of which receive backing from Apple, Amazon, Facebook, and Google, issued a condemnatory letter to the Judiciary Committee.

In it, the groups decry policies they say would result in lasting repercussions for the tech industry, the report said.

“We believe that voters want Congress to fix things that are broken — not break or ban things that they feel are working well,” the letter reads.

“We strongly encourage you to reject these proposals,” it added.

The package of bipartisan bills aims to redefine how Big Tech operates and could mean a potential breakup of sector leaders. Issues targeted in the legislation include conflicts of interest, acquisitions, and outsized power enjoyed by top companies like Apple.

One bill, for example, would prohibit Apple from selling devices with first-party apps preinstalled.

Another provides more funding for enforcement agencies like the Justice Department and the Federal Trade Commission, the latter of which recently named prominent antitrust scholar Lina Khan as its chair.