As more research suggests that the United States's obesity crisis is worsening, health advocates and industry have become increasingly at odds on how to address the problem.
Corey Henry, vice president of communications for the American Frozen Food Institute (AFFI), said that tomato paste has "significant nutritional value" and is "packed with Vitamins A and C and rich in fiber, potassium and antioxidants."
"Nearly two whole tomatoes are required to make just one tablespoon of tomato sauce, which is why USDA rightly credits one-eighth of a cup of tomato paste as a full serving of vegetables," Henry said in statement.
He added that "Congress did not make pizza a vegetable" last year.
"Pizza is not now considered a vegetable and never will be considered a vegetable, and no one has ever, or will ever, ask that pizza be considered a vegetable," the statement read.
"Congress acted to retain the current vegetable crediting for tomato paste ... in recognition of tomato paste's significant nutritional value."
Polis's measure — the SLICE (School Lunch Improvements for Children's Education) Act — would empower the USDA to implement "healthful" standards for the pizza served in public school cafeterias, according to a release.
The bill would specifically permit the USDA to apply "sodium reduction targets" and "whole grain requirements" to the pizza served to students and bar one-eighth cup amount of tomato paste from counting as a serving of vegetables under school nutrition guidelines.
Henry said that the frozen pizza provided by AFFI members to schools is "calorie and portion controlled, made with whole grains, and rich in fiber with reduced levels of fat and sodium."
"Frozen food producers are committed to working with our school nutritionist partners to provide healthy food options that improve nutrition," his statement read.
—This post was updated at 4:31 p.m.