If you're in Iowa, there will be a "National Summit on Immigration" in Marshalltown on February 26. I don't have any further information on it, but considering it's in Iowa some presidential candidates might show up. I strongly urge everyone to attend if possible and try to ask tough questions of those candidates and others who support amnesty. Publicly embarassing someone like Bill Richardson would be a great way to make immigration issues a part of the upcoming campaigns.

You need a reservation to attend, and in order to get that you need to mail in an SASE by Feb. 16 as described here.

UPDATE: They changed the process to get tickets, so I updated the link.