We’ve known for months now that former EPA Head Lisa Jackson used multiple non-governmental email accounts when doing government business.

Late last year, the EPA’s critics — including Republicans in Congress — accused former EPA Administrator Lisa Jackson of using an email account under the name “Richard Windsor” to sidestep disclosure rules. The EPA said emails Jackson sent using her Windsor alias were turned over under open records requests. The agency’s inspector general is investigating the use of such accounts, after being asked to do so by Congress.