'This boat only holds 6 people!'
'Thats racist!'

Historical reaction? Did you spend at least 30 seconds to say outloud or to yourself, "I wonder what was the reaction to the Immigration Act of 1924?" then start doing some research?

Because if you had, you would have found quotes from Hitler in his 1928 follow up to Mein Kampf ( quite literally titled Zweites Buch or Second Book ),

"The capacity of assimilation for the American Union has given out…with regard to the Chinese…People feel this clearly and know it and for that reason they would most prefer to exclude these foreign bodies from immigration… That the American Union feels itself to be a Nordic-German…is also revealed by the apportionment of immigration quotas among the European [peoples]. Scandinavians, then Englishmen and finally Germans have been accorded the largest contingent. Latins and Slavs receive very little, and the Japanese and Chinese are groups that one would prefer to exclude entirely. "

So, when the group of people who decided to be as racist as possible stop and say "Hey, that Immigration Act of 1924? That's a GREAT IDEA!!" that should be all the historical reaction you need.

Thats a stretch at best

Maybe you need to start learning some history? The Nazi's LOVED the 1924 Immigration Act.

In 1933, the Nazis monthly journal said that “The United States [has] come to understand the monstrous danger of the ‘great melting pot of races’ over the course of the last decades, and put a check on bastardization through draconian immigration law…”

Otto Koellreutter, a leading Nazi scholar, wrote in 1933 that America’s earlier immigration policies had been replaced in 1924 by a legal framework that “represents a carefully thought-through system that…protects the United States from the eugenic point of view against inferior elements trying to immigrate…”

When the Nazis came to power, they drafted a handbook for legislation. In its section on naturalization, the handbook says that “it is opportune to direct the reader’s attention to the fact that the difference between desirable and undesirable naturalization has played an important role in the Immigration Law of the United States for some years.”

In its section on the crafting of racial purity laws, the handbook advises:

American immigration legislation shows that in the USA a clear understanding has been achieved that a unified…American [people] can only emerge…if wholly foreign racial population masses are not tossed in with the core population, which is English-Scandinavian-German…

The Nazi research into American immigration laws would eventually form the intellectual backing for the exclusion and attempted extermination of Germany’s Jews.

Now tell us about how FDR turned back legit refugees while letting in Nazis to hold a frickin' convention at Madison Square Garden.

You feel like that's a Gotcha! Because it's not. FDR was racist AF. He did put all Asian Americans in conentration camps but not German ones. He actively opposed an anti-lynching bill at the federal level.

FDR did a lot of good stuff, but he wasn't a saint.

But weren't some American ethnic Germans and Italians also put in camps, albeit at a lesser number?