Here's a serving of accountability news for the weekend:

• Lawmakers in states with big coal companies have been reticent to suggest reforms to the industry, reports The Washington Independent. The publication also points out how the lawmakers who have been the most silent have received the most money from coal companies.
• Seven women accused the same doctor of sexual abuse, but regulators and police were slow to respond. It wasn't until nine years after the first complaint that the doctor was suspended, according to the Chicago Tribune.
• Sen. Ben Nelson supported a proposed regulatory exemption for Warren Buffett's Berkshire Hathaway, while he and his wife also owned as much as $6 million in the company's stock, reports BusinessWeek.
• Oakland's mayor said he'd take a 10 percent pay cut to help achieve budget cuts, but a public records request by The Oakland Tribune shows he never followed through.

These stories are part of our ongoing roundup of investigations from other news outlets. For more, visit our Investigations Elsewhere page.