The Democratic presidential candidates at Tuesdays debate all agreed that President Donald Trumps policy of taking immigrant children away from their parents and locking them up is wrong. They just disagree on whether the government should repeal the law Trump used to justify it.

Some candidates at the CNN-hosted debate pushed back hard against the idea of decriminalizing unauthorized border-crossing, an idea growing steam among some progressives and pushback from former government officials . Decriminalizing unauthorized immigration wouldnt mean it goes unpunished; migrants could still be put in deportation proceedings in civil courts, but those cases wouldnt clog up the criminal justice system.

Sen. Elizabeth Warren (D-Mass.) voiced the strongest support for the idea during Tuesdays debate the ideas top booster , former Obama administration official Julin Castro, is appearing in Wednesdays lineup while many others insisted the problem isnt the law, its Trump.

Right now, if you want to come into the country, you should at least ring the doorbell, Rep. Tim Ryan (D-Ohio) said, adding that the president could still separate families even if unauthorized immigration was decriminalized. Weve got to get rid of Donald Trump, but you dont decriminalize people just walking into the United States.

Montana Gov. Steve Bullock said decriminalizing unauthorized immigration and giving health care to undocumented immigrants an idea supported by candidates including Sen. Bernie Sanders (I-Vt.) was playing into Donald Trumps hands.

The challenge isnt that its a criminal offense to cross the border, Bullock said. The challenge is that Donald Trump is president and using this to rip families apart. A sane immigration system needs a sane leader, and we can do that without decriminalizing [or] providing health care for everyone.