At least, that's what it would have been called by Republicans if Dems had done this during the Bush administration. Eric Kleefeld at TPMDC:
• Sen. Jim DeMint (R-SC) is visiting Honduras in order to support the recent military coup against a leftist president, which has been opposed by the Obama administration and all the surrounding countries in the region. (Late Update: DeMint's office says he is not taking sides during his visit to the current Honduran leadership, denying the New York Times reports that this was his intention.)
• Sen. Jim Inhofe (R-OK) will be going to the upcoming climate change conference in Copenhagen, bringing a "Truth Squad" to tell foreign officials there that the American government will not take any action: "Now, I want to make sure that those attending the Copenhagen conference know what is really happening in the United States Senate."
• House Minority Whip Eric Cantor (R-VA) traveled to Israel, where he spoke out against President Obama's opposition to expanded settlements. He also defended Israel on the eviction of two Arab families from a house in east Jerusalem, which had been criticized by Secretary of State Hillary Clinton.
• Rep. Mark Kirk (R-IL) boasted in June that he told Chinese officials not to trust America's budget numbers. "One of the messages I had -- because we need to build trust and confidence in our number one creditor," said Kirk, "is that the budget numbers that the US government had put forward should not be believed." Since then, he has declared his candidacy for U.S. Senate.
As Kleefeld points out, these aren't just overseas junkets, these Republicans aren't only creating their own version of foreign policy, they are acting on it by traveling overeas and directly undermining official U.S. policy. The only similar situation that comes to mind under the Bush administration was when Reps. David Bonior, Jim McDermott, and Mike Thompson visited Iraq prior to the American invasion. Prior to the invasion. They came back convinced that there were no WMD in Iraq, and that the Bush administration was hellbent on taking us into that war, anyway. And they were, and continue to be excoriated by the Right for that trip.
Here we have Republican members of Congress directly undermining American diplomacy. Where are the great patriots among the Republican party or in the punditocracy now?