Brownback campaign spokesperson John Rankin told CBS News' Joy Lin that "the idea has been in the works for about two weeks." Both campaigns are highlighting what Rankin calls "their bipartisan solution for Iraq."
"Partisan politics must not come in the way of finding a solution to the war in Iraq," Biden said in a press release. Brownback offered this: "Joe and I might be running for the nomination of two different parties, but we agree on one thing: the American people want progress in Iraq and this represents a viable way forward to stability and success."
The event will be held in front of the Greater Des Moines Committee on Foreign Relations.