Banks Seek to Ease Regulations; Trade Uncertainty Roils U.S. Markets

P.M. Edition for May 7th: Big banks want to ease a rule put in place after the financial crisis, that requires them to keep a cash cushion for swaps trades. The Wall Street Journal's Lalita Clozel explains. Plus, trade uncertainty sent stocks lower on Tuesday. WSJ's Akane Otani has more on what shook investors. And WSJ's Denise Roland talks about a new drug with a $2 million price tag.

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