Plagiarism issue at Illinois newspaper
Plagiarism Suspected At Newspaper Owned By Legislator
The relevant state legislator is Steve Landek and the article notes the possible involvement of Mark Hornung, who had a plagiarism issue at the Chicago Sun-Times, twenty years earlier.
Of the 1995 incident, wikipedia notes: --On March 24, 1995, the Sun-Times published an editorial by Mark Hornung, then the Sun-Times' editorial page editor, that plagiarized a Washington Post editorial that had appeared in that paper the day before --
Copying from the Washington Post is alleged in the 2015 incident.