WASHINGTON (AP) - Congress is fighting to keep pizza and french fries on school lunch lines, picking apart an Obama administration proposal to make school lunches healthier.

A spending bill released late Monday would unravel school lunch standards proposed by the Agriculture Department earlier this year, forcing the USDA to pull back an attempt to limit potatoes on the lunch line, delaying limits on sodium and delaying a requirement to boost whole grains.

The spending bill also would allow tomato paste on pizzas to be counted as a vegetable, as it is now. The department's proposed guidelines would have attempted to prevent that.

The changes had been requested by food companies that produce frozen pizzas, the salt industry and potato growers.

(Copyright 2011 by The Associated Press.  All Rights Reserved.)