Donato Giovine

For a lot of reasons i'm thinking to move to usa from italy.
I'm 37 yrs old, degreed, higly skilled, married and with two worderful
children.
Very probably i'll sell the little company owned with my father and i'll
be ready to begin a new life.
I've understood that there are very strict immigration laws, but i also
know that nothing is impossible.
If i arrive in the usa with wife, two children, one million dollar and
with a strong desire to improve my english and start working hardly, how
many possibilities have i to remain there ? If i need an attorney is
better to find in the usa or here in italy ? Thanks everybody !!
P.S. We love Maine !