Scotch is whisky from Scotland. If the whisky is not from Scotland, it is not Scotch. Period. The same can be said for Champagne: the term "Champagne" is used exclusively for sparkling wines that are produced from the Champagne region of France, otherwise it is simply called sparkling wine.
A mistake commonly made is calling whisky, scotch. This is because there are several other sub-sets of whisky, besides scotch. Besides certain requirements on how the whisky is produced (ingredients, duration of aging, etc.), most whisky are classified according to the regions where they are made. Here is a list of some of the more popular types of whisky:
Bourbon (made mostly in Kentucky) - Maker's Mark, Jim Beam, Wild Turkey
Tennessee whisky - Jack Daniels
Irish whisky - Jameson
Canadian whisky - Crown Royal