The law also "amends the federal criminal code to treat cigarettes and smokeless tobacco as nonmailable matter
and prohibit their deposit into the U.
Every obscene, lewd, or lascivious, and every filthy book, pamphlet writing or other publication of an indecent character is hereby declared nonmailable matter
and shall not be conveyed in the mails or delivered from any post office or by any letter carrier.
86) Nonmailable matter
is "[m]atter the deposit of which in the mails is punishable under section 1302, 1341, 1342, 1461, 1463, 1714,(87) 1715,(88) 1717, 1718,(89) or 1738 of title 18.