Japanese and European companies actually produce 'em.
I can't think of a single motorcycle (besides HD) or scooter that's made by an American company.
I can get a new Ninja 250 for (apx) $2,750 - $3,500. Where's the American competition?
American Iron Horse
http://www.americanironhorse.com/
ATK Motorcycles
http://www.atkusa.com/Products.aspx
Big Dog Motorcycles
http://www.bigdogmotorcycles.com/index.php
Bourgets Custom Motorcycles
http://www.bourgets.com/2009.htm
Buell Motorcycles
http://www.buell.com/en_us/
Confederate Motorcycle Company
http://www.confederate.com/confederate3/index.php
Electric Moto
http://www.electricmoto.com/index.php/products/index
Exile Cycles
http://www.exilecycles.com/
Norton Motorcycles
http://www.nortonmotorcycles.com/bike/default.asp
Victory Motorcycles
http://www.polarisindustries.com/en-us/Victory/Pages/Home.aspx
Harley only survives because the government gave them protection and preferences when they were about to go under. That and all the bikers that can't get the Japanese bikes to backfire when they detune them.
Again, sadly, HD concentrates only on the litre class and above motorcycles. The 250ccs, 500ccs etc are dominated by the Japanese and the 100ccs to 250ccs by Indian manufacturers.