Do you think we should abandon the DMZ in Korea?
No I don't since it is only 72 miles long and Israel is surrounded by islamofascist fanatics who wish to blow them up, while the US's problem are for the most part peaceful Christians looking to find a job to feed their families, and the President wants to bring some sanity to the system by weeding out the bad and terroristic who wish to do harm and the anti-immigration forces are putting roadblocks in his way.
As for Korea, it is many South Koreans dream to see the wall between the Koreas come down and where their starving North Korean reletives can get out of the grip of the insane Kim.