BANGKOK — Wall Street drifted toward gains before the market open on Tuesday as more corporate earnings come in, giving investors a break from fretting about if and when the Federal Reserve might cut interest rates. Futures for the Dow Jones industrials rose 0.6% before the bell, while futures for the S&P 500 inched up 0.2%. Shares of UnitedHealth Group jumped 7.6% in off-hours trading after the health care giant beat Wall Street's first-quarter sales and profit targets. Concert promoter Live Na