Obama is like a chef who is preparing a hot and hearty skunk & thistle stew that will disgust us and make us sick.
Those who support him don't know what he is cooking. They think whatever he prepares will taste good and be good for us. All they know is they like him and trust him.
The numbers of those who know what he's cooking grow in size every day.
It's too bad there isn't one signature item that can be pointed to which would illustrate any of the threats his administration poses to America.
But in terms of the O.P. where Bush did or didn't do things in a way which we agreed or disagreed with, Obama is changing the framework of government and our society. For the worse.
At least Bush wasn't a threat to our very system.