Remember the tide of immigration: German immigration peaked in 1882 at 250,000(!), but after that, immigration from southern and eastern Europe increased dramatically.
Republican party controlled legislatures in Wisconsin and Illinois: tried to stamp out German Lutheran schools. German Lutherans had been Republican but went over en masse to Democratic party, (joining Catholics, Scandinavians, Poles, & German Catholics, Freidenkers). Republicans were defeated, Democrats changed the laws back in 1890. Democrats also won federally in House in 1890, and Grover Cleveland re-elected in 1892.
Bennett & Edwards acts were repealed, but had taken their toll: