Perhaps looking to take advantage of his well-received speech to activists in Iowa last weekend, Wisconsin Gov. Scott Walker has launched a committee to prepare a White House bid. The committee, called Our American Revival, will fund his activities in the run-up to launching a campaign. Walker has appeared recently at events in Iowa, Denver, and at a gathering hosted by the billionaire Koch brothers. His moves comes as other potential candidates, including Jeb Bush and Chris Christie, make similar steps.