NYT:

Four state attorneys general have begun looking into the online fund-raising practices of both political parties, specifically seeking information about the use of prechecked boxes to enroll contributors in recurring donation programs that spurred a wave of fraud complaints and demands for refunds last year.

The attorneys general for New York, Minnesota, Maryland and Connecticut have sent letters to WinRed, which processes online donations for Republicans, and ActBlue, its Democratic counterpart, asking for documents related to the practices, according to court documents and people familiar with the matter.