As the UK Government investigates avenues to curb the number of people migrating to the country in order to take advantage of a more generous system of benefits and services than they may be entitled to in their home state, whilst at the same time welcoming migrants who come to work, what is the Commission doing to ensure that undue pressure is not put upon individual Member States and that they are able to put in place their own reasonable measures to make the burden of migration more bearable?