Within that new framework, it is not possible for the controls by the national administrations to be exhaustive, in particular, since for almost all schemes, only a limited part of the population can be checked on-the-spot.
Laistigh den chreat sin, ní féidir rialuithe na riarachán náisiúnta a bheith uileghabhálach agus, go háirithe, i gcás na scéimeanna uile, geall leis, ní féidir ach cuid theoranta den daonra a sheiceáil ar an láthair.