Well, if you're ever planning on going to the US, you'll take step 1 and step 2 but how would Canadians who practice in Canada ever need to take an exam entitled :United States Medical Licensing Exam?
I'm not sure if LMCC is the same as MCCQE but it probably is as LMCC is probably the French-translated version of MCCQE as I go to school in Montreal.