A proposed U.S. House bill barring the government from regulating phone and cable companies in regard to the Internet has come under fire.

Amazon, eBay, Google, Microsoft, Yahoo and IA/Interactive wrote a letter strongly objecting to the bill, which would let the Federal Communications Commission decide disputes about Web access on a case-by-case basis only, The Washington Post reported Wednesday.

The bill would outright bar the FCC from putting any detailed rules about Web access in writing.

The letter says the bill strips the FCC of any power to regulate Internet neutrality, or stopping companies that provide Internet access from blocking or slowing down particular Web sites or services, the Post said.

We are extremely concerned that legislation before your committee would fail to protect the Internet from discrimination and would deny consumers unfettered access, the six companies wrote in the letter to House Commerce Committee Chairman Joe Barton, R-Texas, and Rep. Fred Upton, R-Mich., chairman of the panel's subcommittee on telecommunications and the Internet.