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By HADAS GOLD | 8/15/13 9:35 AM EDT

Rep. Steve King shot back Thursday morning at claims he’s an “ineffective” congressman, saying he’s had the highest number of amendments passed in Congress.

“According to Jeff Flake’s analysis, I am third in the number of amendments offered in Congress over the last decade and of those I have had the highest level of passage of those amendments,” the Iowa Republican said in an interview with CNN’s Kate Bolduan. “So if you look at objective data that came out of now Sen. Flake’s ‘s office, I might be the most effective congressman there rather than a mediocre congressman there.”

King was responding to comments made on Sunday’s “Meet the Press” by GOP strategist Ana Navarro, who called King a “mediocre congressman with no legislative record.”

A spokesperson for Sen. Jeff Flake’s office said the analysis King cited is now outdated.

“It was an internal analysis done by our office that is no longer current,” Bronwyn Lance Chester said in an email.

The congressman also defended his controversial statements about illegal immigrants with “calves the size of cantaloupes” saying they were “narrowly defined.”

“My statement was very narrowly defined, not even just to drug smugglers, but professional drug smugglers that are in physical shape to carry 75 pounds of marijuana across the desert,” King said. “That’s what I described. It’s amazing to me that anyone can interpret anything in there that has to do with race or ethnicity.”

Last month King said the possibility of legalizing valedictorians who are undocumented immigrants through immigration reform wasn’t worth also legalizing drug smugglers.

”For everyone who’s a valedictorian, there’s another 100 out there that weigh 130 pounds and they’ve got calves the size of cantaloupes because they’re hauling 75 pounds of marijuana across the desert.”