Why permitting some abortion is smart politics

Since the SCOTUS Roe v. Wade ruling was leaked a couple of months ago, the GOP has refrained from putting Republican-led states on an abortion "purity test," says New York Times columnist Emily Bazelon.

Why? Because the majority of Americans believe abortion should be legal in some cases — but not all.

"Everything depends on where you draw the line," Bazelon tells Ian Bremmer on GZERO World.

The devil is in the details. "Which states and where and how many matters a lot," she says, adding that enforcement and access to abortion pills is going to turn into a big legal battle.

Watch the GZERO World episode: US Supreme Court fights: why ending Roe is only the beginning