Last I heard land taxes were charged at the state and county/township level.

Two things :

1) If your land taxes go down a dollar, some poor guy doesn't go a day without a can of soda. It just doesn't work that way. Federal government provides most of the benefits you listed. At some point we should probably separate the two, but I give you credit that you probably know this is far more complex than that. As an example, why is this person poor? Is it because the area doesn't have any jobs? Maybe they don't have any jobs because of the immense tax burdens. Etc.

2) I'm not really in favor of the government handling my retirement. If it wants to force me to save something for myself, in a relatively not-stupid way, ok. Social security doesn't work like that. It's pretty much the 'shoebox' approach to retirement savings.

And finally, do you think you could take Sweden's entire system, apply it in America and get the same success without any dire consequences? If not, why do you keep on bringing up Sweden, etc?