At $600 per qualified person it costs ~$200 Billion, so if we changed that to $2,000 it would cost ~$670 Billion (though in reality less because it wont be 2000 for each child). After that there's still plenty of money to add to unemployment benefits before we reach the same $900 Billion. If they actually did this it would be a historic act and likely the first time in any of our lifetimes that a congressional bill was more tilted to ordinary people than to lobbyists.