WHY: Crisis conflicts, war, poverty, and now climate change force families to flee and look elsewhere for stability and security.

WHAT: The number of immigrants and refugees trying to reach Europe is skyrocketing, and many of those people are dying on the way there, most from drowning. Because of this, many are captured and are either sent back, stay in a prison for committing a crime, or simply die in the Mediterranean sea.

WHEN: This has always been an issue, but now , yes 2015, it's getting out of control. In 2014, 3500 died trying to reach Europe and EU's external border management agency, Frontex, detected 278,000 illegal border crossings.

WHERE: Countries surrounding the Mediterranean sea. Migrants In North Africa and the middle east trying to reach southern Europe. Almost any country from Morocco to Afghanistan, and even central Africa.

https://news.vice.com/article/the-building-blocks-of-fortress-europe-how-eu-policy-is-failing-record-numbers-of-migrants

The immigration to specifically the UK has had a positive spin on the economy. Now it's to the point that if (hypothetically) every new immigrant were to be suddenly kicked out, the UK's economy would be totally devastated. The UK is simply a big example, but almost all other countries in the EU are in some way benefiting from immigration.

Again, the UK seems to be the biggest in the need of this immigration issue to be solved due to their economy becoming dependent on them.  Other coutries like France and Italy benifit from immigrants in simular ways, but culture diversity and religious spread can be a double edge sword.