BERLIN (AP) — Germany’s parliament is expected to vote Friday on an opposition bill calling for tougher rules on migration that could become the first legislation to pass thanks to a far-right party — adding to a controversy about the attitude of the front-runner in Germany’s upcoming election toward the far right.

Former German Chancellor Angela Merkel has issued rare public criticism of her successor as the country’s center-right leader, the front-runner in Germany’s election next month, for putting to parliament proposals for tough new migration rules that only passed with the help of a far-right party.

Former German Chancellor Angela Merkel criticised the leader of her Christian Democrats (CDU), Friedrich Merz, for drawing on support from the far-right to pass a motion in parliament, in a statement on Thursday.

Former German chancellor Angela Merkel on Thursday criticized her opposition centre-right Christian Democrats (CDU) for passing a motion in parliament for hard-line reforms to migration policy with votes from the far-right Alternative for Germany (AfD).