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Tonight's show

01:51

Cory Gnazzo, senior producer of the Rachel Maddow Show, shares a preview of tonight’s show – our story yesterday about the Heritage Foundation immigration study gets even weirder, plus a look at why it is taking so long to fill the top EPA post; Mark Barden, the father of one of the victims of the Sandy Hook shooting joins us on the show to discuss gun reform, and we’ve got a Best New Thing that soars to new heights.