Governors, lack authority to stop Syrian refugees
The law governing acceptance of refugees, the Refugee Act of 1980, puts authority for admission of refugees in the hands of the president:
Signed by President Jimmy Carter.
http://www.gpo.gov/fdsys/pkg/STATUTE-94/pdf/STATUTE-94-Pg102.pdf
Obama breaks the law all the time, forces the machinations of government to stop him from doing what he wants. This does not excuse the governors from breaking the law. It does give them a moral high ground from which to argue.
Put Obama on the spot to have federal agents or troops engage state or local forces into accepting these “refugees” over the cries of their state and local government. Let’s have that debate.