Not since the Gingrich effort to defund the left. During that time, the phone rang off the hook as people called the representatives complaining that Republicans were trying to kill Big Bird. The right beat a shift retreat...
I don't want to scare you, but take a look at my home page (click on my name) and scroll down. Names of 100+ Republicans who refused to reduce their funding 1%.
So the battle is a slow one. Dropping a letter, sending an email or making a phone call to your local congress critter is a start.