MADISON, Wis. — Wisconsin Gov. Scott Walker isn’t commenting publicly on the U.S. Supreme Court’s rejection of an appeal to reopen the investigation into his recall campaign.

The court on Monday turned down the appeal, leaving in place a state Supreme Court decision from last year ending the probe of the Republican governor.

Walker’s spokesman Joe Fadness says the governor has no comment on the decision. Walker has no public events scheduled for Monday, and he has not posted anything on Twitter since Sunday.

A telephone message left for Milwaukee County District Attorney John Chisholm, the prosecutor who launched the probe, wasn’t immediately returned.

Neither was a message left for Iowa County District Attorney Larry Nelson, who represented the prosecutors in the U.S. Supreme Court appeal attempt.