As demonstrated in the cartoon, the unwelcoming attitudes towards immigrants

During the 1920s, the political and social climate of the United States became nativist, meaning that many people were unfriendly towards the idea of immigration. In part, this was a reaction to the fear of Communism in the aftermath of the Russian Revolution of 1917. In 1919, several bombs were mailed to prominent people around the country, including Attorney General A. Mitchell Palmer and J.P. Morgan, Jr. Though no one died in these bombings

congress was not thoroughly prohibiting states from funding religious schools.

the section of the chart that represents a point at which a bill needs approval from a majority of people in both chambers to advance is j, as this is the only section before the bill becomes law which has both rows (symbolizing the chambers) converging into one, meaning that the two parts of the congress have to approve of it before it can march on with the process.