<section xmlns="http://xml.house.gov/schemas/uslm/1.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:dcterms="http://purl.org/dc/terms/" style="-uslm-lc:I80" id="id74ca567e-3b28-11eb-ad8c-9fba61cd9daf" identifier="/us/usc/t18/s1723"><num value="1723">§ 1723.</num><heading> Avoidance of postage by using lower class matter</heading><content>
<p style="-uslm-lc:I11" class="indent0">Matter of the second, third, or fourth class containing any writing or printing in addition to the original matter, other than as authorized by law, shall not be admitted to the mails, nor delivered, except upon payment of postage for matter of the first class, deducting therefrom any amount which may have been prepaid by stamps affixed, unless by direction of a duly authorized officer of the Postal Service such postage shall be remitted.</p>
<p style="-uslm-lc:I11" class="indent0">Whoever knowingly conceals or incloses any matter of a higher class in that of a lower class, and deposits the same for conveyance by mail, at a less rate than would be charged for such higher class matter, shall be fined under this title.</p>
</content><sourceCredit id="id74ca567f-3b28-11eb-ad8c-9fba61cd9daf">(<ref href="/us/act/1948-06-25/ch645">June 25, 1948, ch. 645</ref>, <ref href="/us/stat/62/784">62 Stat. 784</ref>; <ref href="/us/pl/91/375/s6/j/31">Pub. L. 91–375, § 6(j)(31)</ref>, <date date="1970-08-12">Aug. 12, 1970</date>, <ref href="/us/stat/84/780">84 Stat. 780</ref>; <ref href="/us/pl/103/322/tXXXIII/s330016/1/B">Pub. L. 103–322, title XXXIII, § 330016(1)(B)</ref>, <date date="1994-09-13">Sept. 13, 1994</date>, <ref href="/us/stat/108/2146">108 Stat. 2146</ref>.)</sourceCredit>
<notes type="uscNote" id="id74ca5680-3b28-11eb-ad8c-9fba61cd9daf">
<note style="-uslm-lc:I74" topic="historicalAndRevision" id="id74ca5681-3b28-11eb-ad8c-9fba61cd9daf"><heading class="centered smallCaps">Historical and Revision Notes</heading><p style="-uslm-lc:I21" class="indent0">Based on title 18, U.S.C., 1940 ed., § 351 (<ref href="/us/act/1909-03-04/ch321/s221">Mar. 4, 1909, ch. 321, § 221</ref>, <ref href="/us/stat/35/1132">35 Stat. 1132</ref>).</p>
<p style="-uslm-lc:I21" class="indent0">Reference to persons causing or procuring was omitted as unnecessary in view of definition of “principal” in <ref href="/us/usc/t18/s2">section 2 of this title</ref>.</p>
<p style="-uslm-lc:I21" class="indent0">Minor verbal changes were made.</p>
</note>
<note style="-uslm-lc:I74" role="crossHeading" topic="editorialNotes" id="id74ca5682-3b28-11eb-ad8c-9fba61cd9daf"><heading class="centered"><b>Editorial Notes</b></heading></note>
<note style="-uslm-lc:I74" topic="amendments" id="id74ca5683-3b28-11eb-ad8c-9fba61cd9daf"><heading class="centered smallCaps">Amendments</heading><p style="-uslm-lc:I21" class="indent0">1994—<ref href="/us/pl/103/322">Pub. L. 103–322</ref> substituted “fined under this title” for “fined not more than $100” in second par.</p>
<p style="-uslm-lc:I21" class="indent0">1970—<ref href="/us/pl/91/375">Pub. L. 91–375</ref> substituted “a duly authorized officer of the Postal Service” for “Postmaster General” in first par.</p>
</note>
<note style="-uslm-lc:I74" role="crossHeading" topic="statutoryNotes" id="id74ca5684-3b28-11eb-ad8c-9fba61cd9daf"><heading class="centered"><b>Statutory Notes and Related Subsidiaries</b></heading></note>
<note style="-uslm-lc:I74" topic="effectiveDateOfAmendment" id="id74ca5685-3b28-11eb-ad8c-9fba61cd9daf"><heading class="centered smallCaps">Effective Date of 1970 Amendment</heading><p style="-uslm-lc:I21" class="indent0">Amendment by <ref href="/us/pl/91/375">Pub. L. 91–375</ref> effective within 1 year after <date date="1970-08-12">Aug. 12, 1970</date>, on date established therefor by Board of Governors of United States Postal Service and published by it in Federal Register, see <ref href="/us/pl/91/375/s15/a">section 15(a) of Pub. L. 91–375</ref>, set out as an Effective Date note preceding <ref href="/us/usc/t39/s101">section 101 of Title 39</ref>, Postal Service.</p>
</note>
</notes>
</section>