Back in 2004, 5, 6, 7 when immigration reform was a hot topic there was supposedly an uptick in naturalization amongst hispanics.
During that same time period Bush raised the fee/price for naturalization and also made the testing requirements tougher.
Many U.S. born citizens would have a hard time passing that test.
As for Bush, what he forgot to do was close the border to illegal entry. He, along with every other president since the border became a big problem has done nada, zip, nothing.