It seems to me that you can do the same but with other means. Firstly not to accept new migrants, and secondly at the slightest violation of the law to deport those who are already in the country. And most importantly, you need to cancel the grant for migrants. Their living conditions should be the same as in their homeland. Then they will seek other countries to live in.
I have already posted about this many times. It is NOT possible to deport the criminal immigrants in most cases, especially if they hail from an "unsafe" country such as Somalia. The European Union laws makes it very difficult to deport refugees and migrants, who commits crime.