I would imagine a substantial number of illegals have no interest in amnesty, and even fewer will if there is a $15 federal minimum wage. They do fine, by their standards, selling their labor on the black market with no taxes and no minimum wage, and will do even better when that black market explodes due to the increased minimum wage. So they’re expected to give that up in exchange for what? To avoid the minor risk of being deported? And compete for $15/hour jobs when they have no skills and don’t speak English?
Those who entered after the Reagan era, and been here since 1990....probably speak English and have some skills acquired. But like you say...once legal, you pay taxes and social security, along with healthcare costs.
I know in the urban areas of Virginia...they take home a serious amount of pay on landscaping jobs.