But even foreign-domiciled stocks can offer U.S. exposure, says Morningstar's Heather Brilliant.
The European Central Bank has helped soothe short-term sovereign debt worries in Europe, but long-term competiveness must be improved for the crisis to fully fade away, says Morningstar's Dave Sekera.
Merk Funds' Axel Merk says the European Central Bank will spend and print less money than the Fed in the face of economic problems.
Morningstar's Matt Warren thinks the European Central Bank must build a firewall around failing European nations and banks or the crisis could spread across the globe.
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