The largest city named for Christopher Columbus has called off its observance of the divisive holiday that honors the explorer, making a savvy move to tie the switch to a politically safe demographic: veterans. Ohio's capital city, population 860,000, will be open for business Monday after observing Columbus Day probably "for as long as it had been in existence," said Robin Davis, a spokeswoman for Democratic Mayor Andrew Ginther. City offices will close instead on Veterans Day, which falls on Nov. 12 this year. Native Americans and allied groups have long used Columbus Day to elevate issues of concern to...