Does the President have inherent constitutional authority to authorize domestic wiretaps?

Not surprisingly, according to the president's lawyers, he does.  Yesterday, the DOJ issued this memorandum ( Download dojnsa11906wp.pdf ) defending the president's power to authorize domestic wiretaps.  Among other things, the memorandum concludes that the authorization of such wiretaps is within the president's "inherent constitutional authority" and that the Fourth Amendment warrant requirement does not apply to NSA activities because those activities constitute a "special needs" situation.