Van Valkenburgh was nominated by President William Howard Taft on June 14, 1910, to a seat on the United States District Court for the Western District of Missouri vacated by Judge John Finis Philips. He was confirmed by the United States Senate on June 21, 1910, and received his commission the same day. His service terminated on March 18, 1925, due to his elevation to the Eighth Circuit. Van Valkenburgh was nominated by President Calvin Coolidge on March 18, 1925, to the United States Court of Appeals for the Eighth Circuit, to a new seat authorized by 43 Stat. 1116. He was confirmed by the Senate on March 18, 1925, and received his commission the same day. He assumed senior status on May 1, 1933. His service terminated on November 4, 1944, due to his death.
Notable District Court cases
Smith vs. Kansas City Title & Trust Company, in which the Federal Farm Loan Act was sustained and the creation of land banks held valid, this ruling being affirmed by the U.S. Supreme Court.
St. Joseph Railway, Light & Power Company, vs. Public Service Commissions, which defined certain important principles of valuation of public utilities and the regulation of rates by public authorities.
During World War I Van Valkenburg presided over a number of high-profile political cases. Van Valkenburg was the presiding judge at the trial of a young syndicalist activist from Kansas City named Earl Browder for refusal to register for the draft and conspiracy to interfere with same. Browder, later the General Secretary of the Communist Party USA, was sentenced by Van Valkenburgh to two years imprisonment, which he served at Bates County Jail in Butler, Missouri and Leavenworth Penitentiary. Van Valkenburgh was also the judge who sentenced Carl Glesser, a naturalized American citizen of German birth and publisher of the Missouri Staats-Zeitung, to five years in Leavenworth after Glesser had pleaded guilty to violating the Espionage Act for thirteen articles he had published. Glesser began serving his sentence on April 30, 1918. Van Valkenburgh presided over the May 1918 trial of socialist activist Rose Pastor Stokes for alleged violation of the Espionage Act through speaking against war profiteering. Although Stokes proclaimed that she had "at all times recognized the cause of our entrance into the war" and "at no time opposed the war," Stokes was found guilty at trial and Van Valkenburg delivered a draconian sentence of 10 years' imprisonment, declaring Stokes to be "part of a systematic program to create discontent with the war" and to advance the cause of revolution.
