Windham, New Hampshire (CNN)The day after winning the Iowa caucuses, Ted Cruz issued an apology to Republican rival Ben Carson for falsely telling Iowa caucusgoers that the retired neurosurgeon planned to quit the race, calling it a "mistake." Cruz said in a statement Tuesday that his campaign staff saw a CNN report that Carson was dropping out, although CNN had not characterized Carson's actions that way. "Last night when our political team saw the CNN post saying that Dr. Carson was not carrying on to New Hampshire and South Carolina, our campaign updated grassroots leaders just as we would with...