John C. Schleiffarth
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John C. Schleiffarth

75 West Lockwood Avenue
Suite 250
Webster Groves, MO 63119

Phone: 314-561-9690

Website: jcsattorney.com

National Task Force Task-Force-Member General Member

About John C. Schleiffarth

John Schleiffarth is licensed to practice in both the state courts of Missouri and the Federal Courts in the Eastern District of Missouri. We offer free consultations and payment plans are available in most cases. JCS Law is a member of MACDL ( Missouri Assc. of Criminal Defense Lawyers, NACDL (National Assc. of Criminal Defense Lawyers), BAMSL (Bar Assc. of Metro. St. Louis), JRCLS (J. Rueben Clark Law Society) and the Missouri Bar. John Schleiffarth and JCS Law have been awarded a Client Distinction Award in 2013 and 2014 from Martindale-Hubbell, Avvo.com Clients Choice Awards for DWI, Bankruptcy and Criminal Defense in 2012 and 2013, JCS Law was featured in Attorney At Law Magazine in December of 2012 as “Firm of the Month” and JCS Law is Fully Accredited by the BBB with an A rating. 2014 Summer Session Graduate; 2015 Summer Session Graduate; 2016 Summer Session Graduate; 2017 Summer Session Graduate; 2018 Summer Session Graduate


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FROM OUR BLOG

Interview With an Amicus

06/27/2025

Written by Michelle L. Behan Amicus Curiae (Latin for "Friend of the Court") refers to a brief that is filed by an interested, non-party to the matter under consideration. This is often done in cases where organizations and entities wish to provide the reviewing court with their point of view, be it social or public policy implications, or special interest agendas....

Keeping FSTs Out of a Trial

04/23/2025

Written by Neil Halttunen I want to address a common issue that DWI practitioners are facing, trying to keep FSTs out of a trial. One way is to take the position that FSTs are scientific evidence and make the prosecutor lay scientific foundation which they rarely can do. The HGN test was the result of several studies. See Generally Session 8 of...

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