The people with the power, the rich and powerful, the dictators of nations, the billionaires of others, the elected official that follows capital's interests are the ones with power to change nations. People from other countries looking for a better life have like you little power. You might think you live under a democracy but when so much of the media is controlled by the interests of the rich and powerful and people generally believing what they told to believe, the US currently is a good example of this, the media brainwashing people into to voting for Donald Trump the billionaire, who will make stuff worse for the vast majority of people, wealth and power will be stolen from the average person in the US under his administration. The tariffs as you probably know will make stuff more expensive for the average person. Point is the powerful in the respective countries, including the west, set the course, they decide what is to be done, immigrants is a red herring, a distraction from the power that is being stolen from you and gathered by the powerful. You have been fed immigrants powerful and bad propaganda. I hope that pointing to the real problem and the sources of this misinformation you have been fed is useful, hopefully you can figure out more of the world in time.