If you live in France and would like to pursue an LL.M. in the US, you can obtain general information through the educational advising center of the Fulbright Commission in Paris. In September, there will be two sessions about US LL.M. programs featuring US LL.M. reps and French alumni of US LL.M. programs.
For the info session in Paris (Sept. 26th) : http://www.fulbright-france.org/agenda.php?id=MTAw
For the Webchat in French (Sept. 27th) : http://www.fulbright-france.org/agenda.php?id=MTE4

Those two sessions are free.