Military Spouse Hiring Act This bill amends the Internal Revenue Code to expand the Work Opportunity Tax Credit (WOTC) to include the hiring of a qualified military spouse. (The WOTC permits employers who hire individuals who are members of a targeted group such as qualified veterans, ex-felons, or long-term unemployment recipients to claim a tax credit equal to a portion of the wages paid to those individuals.) A "qualified military spouse" is any individual who is certified by the designated local agency as being (as of the hiring date) a spouse of a member of the Armed Forces.