U.S. Rep. Beto O'Rourke, D-Texas, was interviewed for MSNBC's "Hardball" with Chris Mathews on Sept. 17. O'Rourke discusses his efforts to investigate the source of the alleged ISIS threat on the border. (Link to the interview that aired Wednesday http://www.msnbc.com/hardball/watch/projecting-isis-fear-onto-immigration-330452547787). Among other things, O'Rourke mentions his concern over attempts by some to unfairly link ISIS threats to border security and immigration. Homeland Security officials have already gone on the record saying that there is no evidence that ISIS is plotting to attack the U.S. from the Mexican side of the border. Juarez Mayor Enrique Serrano told the press in Mexico that the alleged threat was false. Based on recent news, new alleged terrorist threats to the U.S. keep cropping up, such as the alleged cell with ties to al queda in Syria that CBS reported on today. Some would say that this and other such "plots" should require the same kind of investigation that O'Rourke applied to the alleged ISIS border threat before they become the basis for further military action.