Sen. Charles Schumer (D-N.Y.), who along with New York Mayor Michael Bloomberg (I) has been a key voice in favor of increased gun-control measures, dings his erstwhile partner in a new interview.

Speaking to Time magazine, Schumer suggests Bloomberg's targeting of pro-gun Democrats for their votes against gun-control legislation is unproductive.

"Frankly, I don’t think Bloomberg’s ads are effective," Schumer said. "The Mayor of New York City putting ads against people in red states is not going to be effective."