U.S. stock index futures dip after government shutdown continues

Investors shrugged off the threat last week, saying they were not worried about a major pullback in shares if U.S. lawmakers failed to strike a deal."These things have no near-term or midterm economic impact whatsoever," said Michael Purves, chief global strategist and head of derivatives strategy for Weeden & Co in New York."They are kind of embarrassing for the United States, but it's not really going to alter business or consumer confidence," he said.