NEW YORK - By employing strategies known to lawyers as the "Double Irish" and the "Dutch Sandwich," Google cut its taxes by $3.1 billion in the past three years - moving most of its foreign profit through Ireland and the Netherlands to Bermuda. Google's income shifting helped reduce its overseas tax rate to 2.4 percent, the lowest of the top five U.S. technology companies by market capitalization, according to regulatory filings in six countries. "It's remarkable that Google's effective rate is that low," said Martin Sullivan, a tax economist with Tax Analysts. "We know this company operates throughout the world...