By: Time Warner Cable News Web Staff 
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Text size: +-WASHINGTON - First Lady Michelle Obama is fighting to protect her prized anti-childhood obesity campaign.
Obama says she's ready to fight to the bitter end against a Republican effort to soften a central part of the campaign - healthier school lunches.
The School Nutrition Association says many districts are losing money because students aren't buying the healthier lunches.
A bill in the Republican-run House would give school districts a chance to apply to skip the requirements for one year.
