Children First Act of 2003

Children First Act of 2003 - Amends part A (Temporary Assistance for Needy Families) (TANF) of the Social Security Act (SSA) to: (1) exclude child care assistance from the determination of the five-year limit on assistance under TANF; and (2) increase funding for child care.

Subjects to the individual and case data reporting requirements of the Child Care and Development Block Grant Act of 1990 any TANF funds expended for child care, whether or not transferred to that Act, and exempts such funds from SSA reporting requirements.

Amends the Child Care and Development Block Grant Act of 1990 to increase the set-aside for child care quality.