U.S. equity futures are under pressure this morning, continuing a choppy stretch for global markets as renewed political gridlock and lofty valuations weigh on sentiment. S&P 500 futures are off about 0.48% and are testing the 50-day MA for support, while Nasdaq 100 contracts are down 0.67% amid weakness in high-growth technology names. Dow futures have slipped 148 points (-0.31%), and Russell 2000 futures are lower by roughly...