With investors having bet for some time on a spate of further Fed rate cuts, the benchmark S&P 500, the tech-heavy Nasdaq and the Dow all gained for the second quarter in a row. For the S&P 500 and the Dow, it also marked their fifth straight monthly gain while the Nasdaq registered its sixth straight monthly gain. And with no signs of an end to the standoff in Washington, U.S. President Donald Trump warned congressional Democrats that a federal government shutdown at midnight would allow his administratio ...