One of the EU’s founding principles is the free movement of people (along with the free movement of goods, services and money).
Because of this, the UK has no control over immigration from other EU member states.
Brexiters often cite health and benefits tourism from other EU citizens and the UK is at greater risk of a terror attack while part of the EU.
Read more: http://metro.co.uk/2016/02/24/eu-referendum-should-we-stay-or-should-we-go-5715240/#ixzz4DjmGbGMz