Community Action Rebuilding Effort Act of 2007 - Authorizes the Secretary of the Treasury to provide with respect to the California wildfires of October 2007 tax treatment of employer leave-based donation programs similar to the tax treatment provided for such programs after Hurricane Katrina by Internal Revenue Service (IRS) Notice 2005-68 (i.e., cash payments by employers to charitable organizations for disaster relief purposes in exchange for foregone employee leave is not taxed as income to participating employees and is deductible by employers as a necessary business expense.)