There is a lot of choice these days about where to offshore.
I mean look at Brazil and China.
See Angelica's article here.
See also Angelica's blog.
Multisourcing is a trend in outsourcing at the moment with businesses using multiple suppliers. Multi-shoring is already a well used term so General Electrics' strategy makes sense.
Multi-shoring will reduce risk and increase choice. Here is a story I wrote about it in April 2009.