For James O'Keefe, "defunding NPR is obvious." He hasn't expanded on his reasoning, but the Republican line on NPR funding, in general, is that our deficit-ridden nature can't afford these kind of luxuries.
What we can afford, apparently, is to subsidize O'Keefe's work. He's applied for a 501(c)3 designation for his organization, Project Veritas, which would make all contributions to the group tax-deductible.