The USA is certainly democratic, but its just a trivial arguement debating the meaning and application of the term Democracy in context in a literal or general sense.
Those silly and trivial founding fathers.
And let us not forget that silly and trivial piece of paper we call a Constitution.
The Electoral College shows exactly how trivial it is to debate whether or not the US is a Republic or a democracy.
You can argue and attempt to justify the US as a democracy all day long but it won't change the facts, sorry lads.