This Court has held that the First Amendment's guarantee of freedom of the press requires that when a plaintiff sues a media defendant for libel, based on a publication of public concern, it is the plaintiff's burden to prove that the libelous statement is false, supplanting the general common-law rule that falsity of a libel was presumed and truth was an affirmative defense. Philadelphia Newspapers, Inc. v. Hepps, 475 U.S. 767, 775-76, 106 S.Ct. 1558, 1563, 89 L.Ed.2d 783 (1986). Does the First Amendment also alter the weight to be accorded a libel plaintiff's evidence, rendering the plaintiff unable, by his or her sworn statement or testimony that he or she has not done the bad thing the libel asserts, to create a question of fact as to whether the libel is true or false?

Does the First Amendment alter the weight to be accorded a libel plaintiff's evidence, rendering the plaintiff unable, by his or her sworn statement or testimony that he or she has not done the bad thing the libel asserts, to create a question of fact as to whether the libel is true or false?