Marcos Maniacs

I am interseted in more information on the marcos.  Can you guys help 
me out about the import laws and which models are street legal.  I am 
a TVR owner and recognize that some models may not be legal in USA.  
If anybody can point me in the right direction I would appreciate it, 
my wife probably does not share that feeling.  Also is there a car 
club in the states?

Thanks,
Rob