<span>The Supreme Court ruled that placing limitations on the amount an individual candidate could spend on his or her own campaign violated First Amendment protections of free speech.</span>
the tone that the author use is serious yet funny :)))))
All of these could be considered an "author's purpose". An author is technically anyone who writes anything, therefore the purpose of writing is theoretically limitless. If you have to choose one of these, however, it would be "to remind".
