Bank of America’s Hartnett, pessimistic about U.S. stocks entering the year, on what keeps him awake at night now - MarketWatch

1. Michael Hartnett indicates U.S. stock rally may be slowing down. 2. International stocks, including EFA, have outperformed U.S. stocks significantly. 3. Hartnett advises focusing on bonds, international assets, and gold. 4. Concerns exist over U.S. Treasuries affecting capital allocation. 5. New trade agreements could temporarily boost U.S. stock markets.