This
database is a comprehensive collection of all the American idioms and slang available.
American Idioms are many and varied. We hope you enjoy our collection. We are adding more all the time.
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intervene on behalf of someone to protect them from something
(from American football)
intervene on behalf of someone to protect them from something (from American football)They ran interference on their top salesman to protect him from the scandal.
This is an expression meaning that if you are going to get into trouble for doing something, then you ought to stop worrying and should try to get everything you can before you get caught.