Individuals who are here illegally, they have to take responsibility by paying a fine and back taxes, learningEnglish, and going to the back of the line so that they take a legal path towards citizenship.
The first is that although the Welsh language flourishes (arguably because Welsh-medium schools offer a way for richer parents to enjoy academic selection), the region remains close to England, sharing, for example, the English press. (The Scots have their own newspapers.) And plenty of English newcomers are learning Welsh, drawn by those same good schools.