In fact, he was so “for” it,
he was the headliner at an ACORN event two years ago, where this photo was taken:
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States ACORN's Bertha Lewis:
“It has deeply saddened us to see Senator McCain abandon his historic support for ACORN and our efforts to support the goals of low-income Americans."
"We are sure that the extremists he is trying to get into a froth will be even more excited to learn that John McCain stood shoulder to shoulder with ACORN, at an ACORN co-sponsored event, to promote immigration reform," she said.
(h/t, AmericaBlog.)