The Girl, Interrupted actress was put through stringent tests before being granted permission to adopt Maddox, 5, and Zahara, 1.
But when she gave birth to baby girl Shiloh Nouvel earlier this year, nobody investigated her suitability as a mother.
She says, "It should be hard to be a parent period. I go through many things to adopt.
"I'm finger-printed, I'm checked, I go through home studies. I have to prove I'm a decent citizen, a good human being.
"That didn't happen to me when I gave birth, so it's interesting that there's no background check when you bring a child into your home in that way."
Jolie and Pitt Gear Up for Christmas, Three Times
The superstar couple have two adopted kids--Cambodian-born Maddox and Zahara, from Ethiopia.
Jolie says, "Zahara's Christmas is Jan. 8. With Maddox, it is the water festivals in Buddhism.
"We're getting into all that with them."
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