U.S. Sen. John McCain, as popular a Republican as exists, will attend a fundraiser breakfast for Iowa 5th District Congressman Steve King (this) morning at Clarion Hotel in Sioux City. McCain is making a swing through the Midwest to help Republican candidates as the party seeks to hold majorities in the two federal chambers. He also is undoubtedly surveying the land for a 2008 presidential bid. McCain is making a stop tonight in Sioux Falls for the 100th annual meeting of the SF Chamber of Commerce.