The amendment, introduced by Sens. John McCainJohn Sidney McCain#JohnMcCainDay trends on Trump's 73rd birthday #JohnMcCainDay trends on Trump's 73rd birthday New poll finds little GOP support for spending cuts to specific federal programs MORE (R-Ariz.) and John KerryJohn Forbes KerryOcasio-Cortez and Cruz's dialogue shows common ground isn't just for moderates 'Landslide' for Biden? A look at 40 years of inaccurate presidential polls Trump campaign considering making a play for blue state Oregon: report MORE (D-Mass.) was approved by voice vote.

"The Senate made the right decision to eliminate the proposed USDA Catfish Inspection Office," McCain said in a statement after the amendment was approved. "The FDA already inspects catfish, which is why the independent Government Accountability Office (GAO) called the USDA program ‘wasteful and duplicative’ and recommended that Congress repeal it."

Earlier in the day Sen. Mark PryorMark Lunsford PryorMedicaid rollback looms for GOP senators in 2020 Cotton pitches anti-Democrat message to SC delegation Ex-Sen. Kay Hagan joins lobby firm MORE (D-Ark.) argued against the program's repeal.

"I think that the way the bill is currently drafted is appropriate and is proper and we should leave the language that Sen. Stabenow and the Agriculture Committee have established —we should leave that language in the legislation as it currently is so that the catfish will be inspected here in the U.S. and imported fish that's marketed as catfish will also be inspected by the same standards that our domestic catfish is," Pryor said.

Pryor said his opposition was about food safety.

"And again, I don't see this as protectionist, I think this is truly to make sure that all the food supply, whether it comes from over sea or is grown here domestically, meets our standards and our American people understand that when they purchase fish that they're going to get something that won't make them and make their families sick when they consume it."

—This story was updated at 6:29 p.m.