President Obama is sending secret, coded messages to Mexicans, letting citizens south of the border know that he agrees with their contention that much of the Southwestern U.S. rightfully belongs to Mexico, claims radio host Rush Limbaugh.

Last week, Obama addressed students at the Anthropology Museum in Mexico City, saying, “Our attitudes sometimes are trapped in old stereotypes. Some Americans only see the Mexico that is depicted in sensational headlines of violence and border crossings - and let’s admit it. Some Mexicans think that America disrespects Mexico, or thinks that America is trying to impose itself on Mexican sovereignty or just wants to wall ourselves off. And in both countries, such distortions create misunderstandings that make it harder for us to move forward together. So I’ve come to Mexico because I think it’s time for us to put the old mind-sets aside. It’s time to recognize new realities, including the impressive progress of today’s Mexico.”

Limbaugh says he was at first puzzled by Obama’s statement that America was imposing its sovereignty on Mexico, before it finally struck him.

“This sovereignty business, this is significant. This is not a throwaway. That’s a dog whistle,” he said.

“It’s a huge dog whistle to radicalized young Hispanic voters. What he did was send signals to that voting block beneath the radar, because most people not gonna understand what is sovereignty business. That block that’s underneath the radar - Telemundo, Univision - he’s telling them that he agrees with them that California should still be Mexico and that New Mexico should still be Mexico.”

Limbaugh indicated Obama counts on the mainstream of America not hearing or understanding what he’s saying in speeches meant for foreigners.

More: Rush: Obama Sending Secret Signals in Speeches