Earlier quoted context omitted.
Have you tried getting adequate and affordable child care? Fortunately our kids don't need it any more. It hugely restricts available options. Either from hours available, lengthy waiting lists or simply finding that after paying childcare work is no longer making economic sense.
Proper child care means a high level of interaction with well-educated people who speak crisply perfect English. For the child, this is a time when they are developing language and cultural habits that will have a lifelong impact, ultimately impacting the quality of their employment and spouse. Immigrants will not provide that. It's hard enough finding non-immigrants who can provide it.
Source? Personally, i'd rather my kid have an immigrant baby sitter speaking and teaching my child in their native language. Plenty of studies around long term intelligence of children learning second languages early on....