The cynics behind Schengen

 Schengen enlargement with Romania and Bulgaria represents the fear Western Europe will be overflowed. Today Schengen is used to win elections but is also a denied area because of street turmoil that took down a government without a plan on what to do further. 

The Schengen Treaty is an agreement, meant to contribute to borderless Europe - gradual abolition of border checks, which allows vehicles and citizens  to cross without stopping on fixed checkpoints (as described in Articles 2,6 and 7). It currently includes 25 states. Yes, correct, the ones excluded are Romania and Bulgaria.