Do EB-5 investor visas work well in practice for those looking to start a business in the US? Looking at the rules it would appear to be straightforward as long

Do EB-5 investor visas work well in practice for those looking to start a business in the US? Looking at the rules it would appear to be straightforward as long as you have the capital -invest $1.8M and employ 10 people. It there a catch other than the amount of the investment that makes it hard in practice?