Democrats will say Mitt Romney started it. Last month, Romney called an embarrassing incident in which an open mic picked up what was supposed to be a private conversation between President Obama and Russian President Dmitri Medvedev "an alarming and troubling development."
"I will make it very clear that the relationship we have around the world is one where America will be strong, that America's strength and commitment to our friends and allies will be unshakable and unwavering," Romney said during a speech in San Diego.
At the time, even House Speaker John Boehner clucked his tongue, saying he wouldn't have criticized Obama while the president was still overseas.
This weekend, it was Obama's turn to use a foreign event to attack his Republican rival. In an interview with Univision during Obama's trip to Cartagena, Colombia, Obama said Romney's immigration policies were out of touch.
"We now have a Republican nominee who said that the Arizona laws are a model for the country ... and these are laws that potentially would allow someone to be stopped and picked up and asked where their citizenship papers are based on an assumption," Obama said.
Regardless of which side is right, it's clear neither team has a problem attacking the other in a foreign setting. Leaving domestic politics at the water's edge once served to highlight American unity on the international stage; now, that barrier has fallen.
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