Merkel's rationale, this is a quote from her
"The two events I personally found most challenging were, for one, the large number of refugees arriving here [in 2015], which I actually do not like to call a 'crisis' – because people are people. So, first, there was the pressure we faced from many people fleeing Syria and its neighboring countries. And now there is the COVID-19 pandemic." Germany have accepted over 1 million refugees, the UK government gets hot under the collar if a dinghy with a dozen refugees on lands in Dover.
Merkel also highlighted that there had been "wonderful examples of personal development" among migrants, citing among other things that many had successfully graduated from high school since coming to the country. As a result German productivity will grow whilst ours is mired in quicksand.
However, she also conceded that not everything had gone ideally: "There have also been some bad incidents, like when I think of that New Year's Eve in Cologne." Merkel referred to the events on Cologne's Cathedral Square on New Year's Eve 2016, when hundreds of women were burgled, harassed and in some cases even raped by groups of migrants.
According to the Cologne public prosecutor's office, most of the perpetrators hailed from Algeria and Morocco. As those two countries have historical links to France it is highly likely they entered Germany from France thanks to freedom of movement rules rather than from countries like Syria who were producing the refugees.
Germany also has a long term commitment to offering peoples of German descent an invitation to move to Germany, plus there is also a real feeling that because of the problems caused with multiple migrations and mass refugees caused by WW2 Germans feel they owe the human race for their mistakes.
Merkel and French President Francois Hollande called for greater European coordination in addressing the migrant crisis—a plea that looked rather weak and futile given the European in June of a quota system for distributing asylum-seekers.
Scarcely two weeks later, however, Merkel and Austrian Chancellor Werner Faymann granted passage to 10,000 refugees stranded in Hungary, after the Hungarian government suggestively placed them on the Austrian border. Two days after that, Merkel earmarked €6 billion to deal with the rush of asylum-seekers, as other countries followed Berlin’s cue. (The United Kingdom had committed to accepting 20,000 Syrian refugees over the next five years—roughly the number of people estimated to have arrived in Germany in one weekend following the Hungary decision; the United States has since promised to admit 10,000 over the next 12 months.) The next day, German Vice Chancellor Sigmar Gabriel announced that Germany could handle a staggering 500,000 asylum seekers per year for the next several years.
Most recently, the Immigration Act for Skilled Workers came into force on 1 March 2020, and is meant to boost the immigration of qualified individuals from abroad. Now it's easier for skilled workers with vocational, non-academic training from non-EU countries to migrate to Germany in order to work. ta Wiki.
Germany does not have open borders Salford Lad, i suggest you do some reading other than your current sources.
The UK quite rightly in my opinion does not have open borders, it has a problem with Immigration policy that has been pushed to the extreme right by halfwits complaining about small boats.
It is however a fact that we have a population problem, anyone familiar with Malthus will understand the effects of demographics on society. We have an ageing population and a negative birth rate of 1.56 in 2020. You need a birthrate of 2 to sustain a population. What will happen and is already happening in some areas is that we will have a population imbalance which means the tax burden falls on fewer and fewer people year on year or retirement age goes up and up and up. A young racist pillock today will find that when he is old he will have no one to care for him, he will have been taxed heavily all his life and all because the Daily Mail said be scared of brown people.