The next battleground over abortion rights won’t be in front of abortion clinics but in the homes of women seeking to end unwanted pregnancies. Legislative efforts around the country seek to clamp down on home-administered, medication-induced abortions, an issue that generally didn’t exist in the days before Roe v. Wade was first decided in 1973. Anti-choice forces are floating ideas — including crackdowns on transport of medications and even attempts to outlaw information from pro-choice advocates — that stray well outside the abortion debate into areas of interstate commerce and the First Am...