This rule amends the U.S. Small Business Administration's (SBA or Agency) regulations to implement provisions of the National Defense Authorization Act of 2013, which pertain to performance requirements applicable to small business and socioeconomic program set-aside contracts and small business subcontracting. This rule also amends SBA's regulations concerning the nonmanufacturer rule and affiliation rules. Further, this rule allows a joint venture to qualify as small for any government procurement as long as each partner to the joint venture qualifies individually as small under the size standard corresponding to the NAICS code assigned in the solicitation.