[2] He was also one of the founders of the Mexican American Legal Defense and Education Fund, and served four terms as board chair.
[7] At 21, after attending San Antonio College briefly,[8] Luna enlisted in the United States Army and served a short stint, advancing to the rank of corporal.
[12] In 1982, he ran for the District 116 Texas House seat, losing to Joe A. Gamez in the Democratic Party primary election.
[14] A Democratic redistricting plan (which also altered district numbering) necessitated all state senators to run for reelection in 1994,[15] and as a result, Luna faced an unsuccessful challenge from Republican Andrew Longaker for the remaining two years of his term, this time in District 26.
[19] Luna died peacefully after midnight 6 November 1999 at a hospice inpatient center in San Antonio, where he had been for three weeks.