This bill seeks to provide equitable treatment for residents of Puerto Rico regarding the refundable portion of the child tax credit. It amends the Internal Revenue Code of 1986 to ensure that the child tax credit is fully refundable for families residing in Puerto Rico, similar to its application in the 50 states. Specifically, the legislation modifies Section 24(d)(1) to include income covered by Section 933, which pertains to income from Puerto Rico. Additionally, it adjusts the definition of "social security taxes" within Section 24(k)(2)(B) to facilitate the full refundability mechanism. These provisions are set to take effect for taxable years beginning after December 31, 2024.