Why has immigration to Europe caused controversy in recent years?

5th grade and 3 sentences pls

Immigration to Europe has caused controversy in recent years for several reasons. Firstly, some people worry about the impact of increased immigration on job opportunities for locals and the strain it puts on public services. Secondly, there are concerns about cultural integration and the preservation of European values. Lastly, the ongoing refugee crisis has sparked debates about border control and the moral obligation to help those fleeing war and persecution.