Obama and the Syrian Refugees

President Barack Obama intends to bring tens of thousands of Syrian refugees (or is that "refugees"?) into the United States in the coming year.

The Obama Administration insists we don't need to worry about jihadists hiding among these refugees because the vetting process is arduous and detailed, takes two years, and makes sure only true refugees are admitted.

Given both of these statements of fact, we must conclude that either (1) the Administration is lying about the vetting process or (2) the Administration has been preparing these refugees to be brought here for more than two years.

I'd really like to know which is true.