• After years of showing little interest, Congress and regulators at the Federal Trade Commission and the Justice Department plan to scrutinize the power, influence and market dominance of tech giants like Google, Amazon and Facebook.
• Mr. Trump needs something to keep him interested in his re-election campaign. For now, that’s Joe Biden.
• As the 23 candidates seeking the Democratic nomination struggle to distinguish themselves, Senator Elizabeth Warren has set herself apart with a series of sweeping proposals that would significantly remake the American economy.
• The Supreme Court on Monday agreed to decide whether Comcast, the nation’s largest cable company, may be sued for race discrimination over its decision not to carry programming from an entertainment company owned by Byron Allen, an African-American entrepreneur.
• Following through on a threat to begin walking away from restrictions in the 2015 nuclear accord that Mr. Trump has abandoned, Iran has begun ramping up its production of nuclear fuel, international inspectors said.