Require Employees To Uniformly Return Now Act or the RETURN Act This bill prohibits Internal Revenue Service (IRS) employees from teleworking during the period beginning five business days after the enactment of this bill and ending on the date on which the IRS certifies that the processing backlog for 2020 income tax returns has been eliminated. The Department of the Treasury may not obligate additional funds for the IRS until the date on which the IRS certifies the backlog has been eliminated.