What you hear is wrong. German border controls are mostly non existent. In a physical way. Drive over the border and you are in Germany. No fence. No controls. Border controls are down to a minimum.
Poland is next to us. No one in Poland needs a visa. There are no real border controls between Poland and us.
The Czech are next to us. No one needs a visa. No real border controls.
France is next to us. No real border controls. Nobody needs a visa. We even have the same currency.
Everybody in the EU (505 million people) can work move and work everywhere (mostly). Nobody needs a visa.
Even from countries where a visa is needed, moving to Germany and staying illegal is relatively easy.
Poland is next to us. No one in Poland needs a visa. There are no real border controls between Poland and us.
The Czech are next to us. No one needs a visa. No real border controls.
France is next to us. No real border controls. Nobody needs a visa. We even have the same currency.
Everybody in the EU (505 million people) can work move and work everywhere (mostly). Nobody needs a visa.
Even from countries where a visa is needed, moving to Germany and staying illegal is relatively easy.
And so on.