BCI needs to review all of its employees for legality before ICE does.
Here's the list of jobs in the construction industry that won't get done, for the most part, without "questionable" labor: painting, bricklaying, tile setting, concrete pouring & finishing, roofing, and likely some others I'm not thinking of right now. This is my observation in the business since 1981 and in my personal life when building/renovating a house. Higher skilled and licensed work like electrician and plumber are generally not peppered with "questionable" labor.