NBC's Matt Lauer and Andrea Mitchell, on Thursday's "Today" show, pressed their guests (Lauer with Homeland Security Secretary Janet Napolitano, Mitchell with Mexican President Felipe Calderon) about reinstituting the assault weapons ban. First up, Mitchell – who pushed Hillary Clinton last month to bring back the ban -- offered Calderon an open to blame Mexican drug cartel violence on guns imported from the U.S.:

ANDREA MITCHELL: President Obama will not deliver long-promised Blackhawk helicopters, nor a ban on assault weapons smuggled south. He campaigned as a candidate against the assault weapons. Now that he's in office, he's had to back off.

FELIPE CALDERON: But most of the weapons, almost 16,000 are assault weapons and 90 percent of those were sold in United States.

Then Lauer, in his segment with Napolitano, repeated Calderon's inaccurate line that 90 percent of drug cartel weapons came from the U.S.:

MATT LAUER: You know President Calderon wants a reinstatement of the assault weapons ban that was, that expired during the Bush administration. When you look at the numbers, that 90 percent of the 12,000 weapons Mexican officials recovered from these drug cartels in the last year or so were made and sold in the United States, and many of those, as we just heard from President Calderon, are assault weapons, how can President Obama, who ran on an issue against assault weapons, how can he not deliver on that?

On Monday's "Good Morning America," co-host Diane Sawyer reported live from Mexico and repeatedly blamed U.S. rage for much of the controversy over illegal immigration. After introducing a segment on the problem, Sawyer lectured, "So a lot of Americans are erupting in anger. While others say, 'Who are we kidding? It's too late to complain.'" Sawyer then opined that efforts to stem the tide of illegals, such as building a 700 mile fence, are "fueled by anger."

Sawyer continued this theme of out of control, emotional Americans into an interview with Mexican President Felipe Calderon. She informed the GMA audience that "Felipe Calderon says it's time to stop yelling at each other and face the facts." Later, she described him as "urging less emotion, more strategy." And although Sawyer found time to describe Calderon as the "new action president" and mention that he went to Harvard University, she didn't ask him about the estimated $10 billion a year illegal immigration costs American taxpayers. (Although, the host did touch on the subject in the segment's introduction.)