What does Uncle Sam represent?

The enforcement clause of the fourteenth amendment states what congress had the authority to a. grant citizenship to people b. change the constitution c. enforce only the bill of rights d. make laws to apply the amendment

Before becoming president, abraham lincoln participated in a series important political debates with jefferson davis andrew johnson stephen douglas andrew jackson

What does portia compare a rumor to? how does she describe how the rumor is circulating? what is shakespeare's purpose in using this imagery?