who asked them to bring workers?
they can deport all expat. today and all of them will leave the GCC.

consider the following

1.the economy of GCC will break down when they stop bringing expatriates from different countries rather than MENA (Middle East and North Africa)
.

2.no one from MENA will do some jobs that Asians do in GCC.

3.MENA countries dont trust one another , so bringing people from other Arab countries to work in GCC is a threat to GCC

4.other Arab nations will try to conquer the systems of GCC if the door is open for them only to work in GCC.

5.Asian countries have VERY cheap labors, so when Asians are stopped not to work in GCC .. that means turing into expensive labor forces in MENA.