To expend that much money requires a Byzantium millions of square feet of office space, billions in worker pay and benefits, conflicting laws and regulations, and mountains of contracts.
Pick any aspect of employment-related immigration and one will find regulations that compel companies to expend time and money under the notion that the number of jobs in America is fixed, work can be performed in only one geographic location and nearly all individuals in a given field are the same.
Just look at all the folks who wait in line and brave hoards of fellow Black Friday shoppers to save a few bucks: People will often expend more effort saving money than it would take them to earn the same amount of cash.