Washington officials once dazzled by the swashbuckling entrepreneurs of Silicon Valley are now openly questioning the freedom they\u2019ve bestowed on Facebook Inc., Twitter Inc. and Google. Emboldened by a president who\u2019s openly contemptuous of the companies - despite his own reliance on Twitter - and intelligence reports linking popular online sites to election interference, lawmakers from both parties grilled top tech executives this week about whether, and how, Washington should rein them in. This comes on top of President Donald Trump accusing tech companies of rigging their news feeds to favor liberal points of view and, in an interview with Bloomberg News, of being in a \u201cvery antitrust situation.\u201d The Justice Department this week announced plans to meet with state attorneys general to discuss whether tech companies are stifling ideas. And the Federal Trade Commission scheduled hearings on consumer protections for users of digital services as its new chief has vowed to scrutinize tech companies. \u201cThe good old days of the public and policy makers standing in awe of what they built is over,\u201d former Federal Communications Commission Chairman Tom Wheeler wrote in a blog post. \u201cThe public is looking for answers, and thus the Congress is looking for answers.\u201d Count among them Republican Senator Richard Burr, chairman of the Senate Intelligence Committee that\u2019s been looking into Russian exploitation of social media in U.S. elections that intelligence officials say was aimed at helping Trump win the presidency. \u201cWhat is under attack is the idea that business as usual is good enough,\u201d Burr of North Carolina told Facebook Chief Operating Officer Sheryl Sandberg and Twitter Chief Executive Officer Jack Dorsey at the hearing on Wednesday. The answer might be sharing more information about malign practices, or greater cooperation from national security officials, Burr said. \u201cIf the answer is regulation, let\u2019s have an honest dialogue about what that looks like,\u201d he said. In the House, Representative Joe Barton, a senior Republican from Texas, told Dorsey \u201cWe would not be having this discussion if there was not a general agreement that your company has discriminated against conservatives, most of whom happen to be Republican.\u201d Tech stocks suffered, with an index of highly traded growth stocks including Facebook, Google parent Alphabet Inc., Apple Inc. and Amazon.com Inc. dropping 4.9 percent over three days. Fueling the demand for action is the approach of congressional elections in November, said Bruce Mehlman, a Republican lobbyist and co-chairman of the Internet Innovation Alliance, a non-profit group that promotes broadband. \u201cThe velocity and intensity of these concerns have accelerated,\u201d Mehlman said in an email. The odds are still long for substantive change, says Paul Gallant, a Washington-based analyst with Cowen & Co., but they\u2019re rising. \u201cWe see regulation coming but suspect it won\u2019t be game-changing,\u201d Gallant said in a Sept. 5 note. \u201cRepublicans\u2019 concerns over \u2018liberal bias\u2019 could lead to a new paradigm that gives greater public visibility into the internet companies\u2019 content decisions.\u201d He put the chances of Congress passing legislation to protect online privacy at 35 percent in the coming months, rising to 75 percent by 2021. Seeking to get ahead of that debate, the powerful U.S. Chamber of Commerce on Thursday outlined a series of proposals for privacy regulation, reflecting a pervasive industry fear that laws governing the collection and use of consumer data are spreading. The business lobby prefers federal standards to a patchwork of state-by-state efforts, such as one enacted this year by California. Even Democrats, a traditional source of support for the tech industry, are warming to the idea of new controls. \u201cI believe Congress is going to have to act,\u201d said Senator Mark Warner of Virginia, the top Democrat on the Intelligence Committee. For example, he said social media sites should tell users how they\u2019re profiting from the data they collect. And he asked whether users \u201chave a right to know when they\u2019re interacting with bots,\u201d or accounts that automatically generate messages. \u201cFacebook ought to have both a moral and legal obligation if there are sites that are incenting violence and take those down,\u201d Warner said. Twitter\u2019s Dorsey said the company can\u2019t always identify bots, which can be programmed to act like humans. The sites have also rejected accusations growing more common among conservatives that their points of view are being ignored. \u201cIt\u2019s their prerogative if they want to look into it. I think they\u2019ll find, there is no censorship of political speech,\u201d said Michael Beckerman, president of the Internet Association, a trade group. \u201cFrom the conservative point of view in particular, these platforms are open and transparent and people are getting their voices heard,\u201d Beckerman said in an interview on Bloomberg TV on Wednesday. \u201cThey\u2019re open for all political parties and all viewpoints.\u201d Facebook Chief Executive Officer Mark Zuckerberg said he\u2019s \u201cspending a lot of time\u201d on issues such as preventing election interference and protecting users from abuse and harm. \u201cThese are all efforts that will take years,\u201d Zuckerberg said in a Facebook post. \u201cThe most important effort - rebuilding all of our content enforcement systems to proactively find harmful content rather than wait for people to flag issues - is at least a three-year project.\u201d The companies have rejected the suggestion they restrain competition, which a top Justice Department official on Thursday implied might be difficult to establish. Ed Black, the president of trade group Computer & Communications Industry Association, said his organization, whose members include Amazon, Google and Facebook, is concerned about the Justice Department\u2019s plan to meet with states attorneys general. While there are legitimate concerns about technology companies today, antitrust enforcement shouldn\u2019t be driven by partisan politics, he said. \u201cWhat would be inappropriate would be if legal action were to be undertaken, not based on a solid evidentiary basis, in an effort to pressure and bring leverage against companies where really the grounds of concern are in other areas,\u201d he said. Gigi Sohn, a distinguished fellow at the Georgetown Law Institute for Technology Law & Policy in Washington, said there\u2019s a partisan divide on what changes are needed. Democrats want protection from foreign actors, privacy protections and increased competition, while Republicans are focused on \u201cso-called bias against conservative voices,\u201d she said. \u201cThe mood has definitely shifted - both parties have made it clear that they are going to be watching tech closely on a variety of issues, and the threat of regulation is more real than ever,\u201d Sohn said.