The U.S. Supreme Court ruled in 2005, however, that federal authorities could continue under federal law to prosecute California patients and providers engaged in the cultivation and use of marijuana for medical purposes.
A quick guide to using the colon. A colon is made up of two dots, one placed above the other. One common use of the colon is to introduce a list of items. For example: To make the perfect jam sandwich you need three things: some bread, butter and strawberry jam. Three items are listed in the sentence above.
The semicolon or semi-colon is a punctuation mark that separates major sentence elements. A semicolon can be used between two closely related independent clauses, provided they are not already joined by a coordinating conjunction. Semicolons can also be used in place of commas to separate items in a list, particularly when the elements of that list contain commas.