Facing new test, Buttigieg pledges openness — with caution

In his rise to the top tier of the Democratic race for president, Pete Buttigieg has impressed voters with his unflappable demeanor.How Buttigieg handles the heat will be another measure of the durability of his improbable run, now that the mayor of South Bend, Indiana, is seen as a serious threat to front-running candidates, especially in Iowa.To date, the more intense inspection — much of it invited publicly by rival Elizabeth Warren — doesn't appear to be slowing Buttigieg's progr