RALEIGH, N.C. (AP) — Attorneys for North Carolina have gotten in one last set of arguments at the U.S. Supreme Court about why a voter identification mandate and 10 days of early voting should be enforced this fall.

A supplemental brief filed Monday reiterates why the court should delay a federal appeals court ruling that struck down the ID requirement and returned early voting to 17 days. The 4th U.S. Circuit Court of Appeals decided the 2013 law was approved with discriminatory intent.

Monday’s brief says making election rules different from what was used for the state’s primaries this year would cause voter confusion. The brief responded to last week’s filing by those who originally sued over the law. They say the provisions must remain blocked.

It’s unclear when the Supreme Court will rule.