Republican and Democrat Lawmakers Step Up Efforts to Adopt Tougher Tech Laws

Legislation to curb the influence of big technology companies, including putting new restrictions on online content, is starting to gain traction in Congress as lawmakers narrow their targets and seek to build on public attention.

A bipartisan group of senators including Amy Klobuchar (D., Minn.) and Chuck Grassley (R., Iowa) came out last week in favor of legislation that would prohibit dominant platforms from favoring their own products or services, boosting similar efforts already under way in the House.

Leaders of the House Energy and Commerce Committee, meanwhile, offered their own far-reaching proposal to...