One of the most crucial rulings to explain the current lack of availability of abortion clinics, Oliver explained, is the ruling in 1992's Planned Parenthood v. Casey.
"(The ruling says) 'states can create restrictions as long as they don't place an undue burden that places a substantial obstacle in the path of a woman seeking an abortion.' Meaning women can be asked to jump through a few hoops, but not too many," Oliver said. "Which might sound less insulting if those weren't the same rules as a dog agility course."
Watch the clip, via HBO, to see the sloths: