Why do yanks in films act like flashing an id card is undeniable proof you're a fed?

[apocalypse]

"mind if I see some id?"
*gets shown an easily counterfeited piece of plastic for 2 seconds*
"yes yes sorry for questioning you sir, I'll tell you literally anything you want"

 

[jattlife]

it’s not a piece of plastic, it’s a detailed badge and will be specialised for the local police department