; and (2) to facilitate the sharing of best practices among States, counties, and other experts in the SBRC region with respect to sustaining and incentivizing the water sector workforce. . (b) Clerical amendment The table of chapters for subtitle V of title 40, United States Code, is amended by inserting after the item relating to chapter 157 the following: 159. Southwest Border Region Capacity Building Programs 15901 . (c) Waiver of matching requirement Chapter 155 of subtitle V of title 40, United States Code (as amended by section 5(a)) is amended by adding at the end the following: 15509. Waiver of matching requirement for colonias and Indian tribes (a) Definition of colonia (1) In general In this section, the term colonia — (A) during the period beginning on the date of enactment of this section and ending on the date that is 2 years after the date of enactment of this section, means— (i) a colonia (as defined by the Secretary of Agriculture); (ii) a colonia (as defined by the Secretary of Housing and Urban Development); and (iii) a colonia (as defined by the applicable State agency); and (B) during the period beginning 2 years after the date of enactment of this section, has the meaning given the term by the Southwest Border Regional Commission pursuant to paragraph (2). (2) Unified definition Not later than 2 years after the date of enactment of this section, the Southwest Border Regional Commission, in consultation with the Secretary of Agriculture, the Secretary of Housing and Urban Development, and applicable State agencies, shall develop a definition of the term colonia . (b) Waiver Notwithstanding any other provision of law, in the case of assistance provided to an entity described in subsection (c) under this subtitle by the Southwest Border Regional Commission— (1) the Federal share of the cost of the project carried out with that assistance shall be 100 percent