De León consulted with tax experts on the measure and it is attracting a lot of attention in part because smaller-scale versions of it have proven successful.
In 2011, the U.S. Supreme Court allowed taxpayers in Arizona to claim tax credits for making charitable contributions to organizations that make payments for children to attend parochial schools.
“As a technical matter, I think that it is an idea that has worked on a smaller scale in other circumstances like Arizona’s program to indirectly subsidize parochial school education,” said Edward Kleinbard, former chief of staff at the JCT who is a law professor at the University of Southern California.