German praise for America's institutional racism was continuous throughout the early 1930s, and Nazi lawyers were advocates of the use of American models. Race based U.S. citizenship laws and anti-miscegenation laws (no race mixing) directly inspired the Nazi's two principal Nuremberg racial laws – the Citizenship Law and the Blood Law. Hitler's 1925 memoir "Mein Kampf" was full of admiration for America's treatment of "coloreds". Nazi expansion eastward was accompanied with invocation of America's colonial expansion westward, with the accompanying actions toward the Native Americans. In 1928, Hitler praised Americans for having "gunned down the millions of Redskins to a few hundred thousand, and now keeps the modest remnant under observation in a cage." On Nazi Germany's expansion eastward, in 1941 Hitler stated, "Our Mississippi line beyond which Thomas Jefferson wanted all Indians expelled must be the Volga."