It looks like the cartoon is sort of mocking the Nazis. Or comparing it to America. You can tell my the symbol of the dude on the right’s shirt..
The supporters you're referring to were called patrons. Patrons were usually wealthy merchants or people who have made their fortune in other ways and wanted to either have a picture of themselves and their family, or generally had a desire to support painting, some even decided to order paintings for the church in order to get in good standing with the church officials.
One of them is Islamic, but I don’t know the other one, sorry.
If the house and the senate pass different versions of a piece of legislation, the differences will be resolved BY A CONFERENCE COMMITTEE.
Conference committee is the committee of the United State congress which is appointed by the house of representative and senate to resolve disagreement on a particular bill. The committee is usually made up of the senior members of both house of representative and senate who originally considered the legislation.
