NEW YORK--(BUSINESS WIRE)--Fitch Ratings has affirmed all ratings for Teachers Insurance and Annuity Association of America (TIAA), its wholly owned domestic insurance subsidiaries and affiliates. The Rating Outlook is Stable. A complete list of ratings follows at the end of this press release. KEY RATING DRIVERS TIAA's ratings reflect the company's extremely strong capitalization and very stable liability profile, good risk-adjusted earnings, the Nuveen integration progressing as expected, and