Even though Peter was born in Mexico, he would still be an American citizen since at least one of his parents was already an American citizen at the time of his birth. Contrary to popular belief Peter would however not be a dual citizen of both countries, but would instead be a "Mexican national" at birth. In his case, Mexican citizenship would only be acquired after a petition was filed for it.
The flag displayed on the right shoulder of Peter's uniform as he is singing to the troops is incorrect. The canton (the upper left quadrant) should be on the right, not the left.
Contrary to popular belief this has nothing to do with "... America never runs away...".but is instead based on universal flag protocol. The canton is always aligned with the position of highest honor- on the upper left when viewed from the front and in the direction of travel on moving objects. This is the standard protocol for the flags of all countries when displayed on opposing sides of any moving object; including people wearing military uniforms, vehicles, and aircraft (military and civilian).
Contrary to popular belief this has nothing to do with "... America never runs away...".but is instead based on universal flag protocol. The canton is always aligned with the position of highest honor- on the upper left when viewed from the front and in the direction of travel on moving objects. This is the standard protocol for the flags of all countries when displayed on opposing sides of any moving object; including people wearing military uniforms, vehicles, and aircraft (military and civilian).
Peter joins the immigrant workers' Cinco de Mayo celebration, which commemorates Mexico's victory over the French in the Battle of Puebla. However, Cinco de Mayo has mostly been an American celebration, currently encouraged by beer and snack marketers. But it is generally ignored in Mexico, so it is not likely that immigrants from that country would hold such a party.
The supposedly Portuguese immigrants have Brazilian accents.
The episode starts on Veterans Day, which is in November, and ends on Cinco De Mayo, which is in May. The events would have to take place over a series of several months for this to be possible, but it seems to only take a week or two.