Our ruling
Reports claim 3 million "illegal aliens" cast votes in this year's election.
The articles point back to tweets from Gregg Phillips, who has worked for the Republican Party and has a voter fraud reporting app. But Phillips will not provide any evidence to support his claim, which happens to be undermined by publicly available information.
If Phillips does release a more detailed report, we will consider that information. But for now, this claim is inaccurate. We rate it False.
http://www.politifact.com/punditfact/statements/2016/nov/18/blog-posting/no-3-million-undocumented-immigrants-did-not-vote-/