MS NOW

Extending a ‘long, sad, and shameful tradition’

Some are accusing migrant children of bringing dangerous diseases into the U.S. It's ugly demagoguery, but we've seen this ugliness before.

In this photo taken July 3, 2014, Flor Garcia, 19, of Honduras, holding her one-year-old daughter, Flor Fernandez, turned themselves over to Customs and Border Protection Services agents after crossing the Rio Grande from Mexico near McAllen, Texas.AP

Steve Benen is a producer for "The Rachel Maddow Show," the editor of MaddowBlog and an MS NOW political contributor. He's also the bestselling author of "Ministry of Truth: Democracy, Reality, and the Republicans' War on the Recent Past."