As the DoJ and FTC pursue civil antitrust litigation against some of America's largest tech firms, a House Committee has approved legislation to curb the market dominance of many of these same firms, including Google-owner Alphabet and Facebook. However, according to a report from WSJ, the tech firms targeted by the legislation are ramping up their lobbying efforts, precipitating a pitched battle over the legislation in the Senate.At the core of the six-bill raft of legislation is a measure to bar big tech firms from favoring their own products on their platforms. It was approved by the House committee early Thursday by a vote of 24 to 20.The NYT reported that Apple and other tech giants engaged in aggressive lobbying against the six-bill package, with Apple CEO Tim Cook going so far as to call Speaker Nancy Pelosi and other top lawmakers to warn them against supporting the legislation. Per the NYT, the calls from Cook were "part of a forceful and wide-ranging pushback by the tech industry since the proposals were announced this month. Executives, lobbyists, and more than a dozen think tanks and advocacy groups paid by tech companies have swarmed Capitol offices, called and emailed lawmakers and their staff members, and written letters arguing there will be dire consequences for the industry and the country if the ideas become law."