There is historic fraud of about $250 million in Minnesotoa over the past few years.
There was one scheme involving a lot of Somalis. That is true
So far they have uncovered new fraud in the tens of millions.
Trying to blame $9bn on Somalis is utter nonsense and typical racist Trump tactics. The investigators have said that the Somali angle is something they are only 'vaguely' looking at. Fraud on government schemes across the USA is about $250bn a year. Nothing about Minnesota is that unusual.
You have been told many times. You are just unwilling to listen.
How do you define a 'useful' member of society. If somebody works hard, doesn't commit any crimes, looks after their family, supports their friends and the community, then I would class them as useful. Most illegal workers actually do pay taxes, whilst being ineligible for benefits. It is a very different system to here. The USA is a massive country. For decades, it has been accepted with a nod and a wink and it has hugely benefited both sides.