We used to live in Italy and when we moved here, I couldn't part with my tacky Leaning Tower of Pisa lamp that made Mr. Fink cringe whenever he looked at it. He just cut of the euro plug and rewired it with a US style plug (he is an engineer so I trust he knew what he was doing). No problem at all using it here, although it is a bit dimmer. The hardest part was finding a 110v bulb to replace the odd size E27 euro one it came with. A candelabra-type bulb worked for me.
I can speak to the dimmer but no problem either using an adapter or just putting a US style plug on it as long as you use bulbs designed for 110v.