Wall Street resumes 2016 slide as energy stocks tumble

Wall Street sold off on Monday, pulled lower by further weakness in oil prices as energy shares led declines, with major indexes retreating after last week's strong gains. Oil prices fell 6 percent on concerns of oversupply after news that Iraq's output reached a record last month. The major indexes each fell more than 1 percent, reversing much of a two-session rally that marked Wall Street's first week of gains in the year.