Davenport— Wisconsin Gov. Scott Walker is wrapping up his first week as a presidential candidate in a three-day swing across Iowa, driving from the eastern bluffs above the Mississippi River to the western ones above the Missouri. The GOP governor will make at least 10 stops in this all-essential early state in the presidential nomination process, which will be key to his candidacy. Without a win or at least a very strong finish in this neighboring state where he spent part of his childhood, Walker is unlikely to sustain for long the campaign that he began Monday in Waukesha. To...