WI, in a fit of executive courage and diplomatic adroitness, the Coolidge Administration keeps outright exclusion of Japanese from the immigration act of 1924. Instead, to achieve most of the same effect, while also avoiding offense to a major and rising power, Japanese are to get a share of the overall immigration quota based on their percent of the US population in 1890.
I imagine the 1890 based quota would keep admittances of Japanese to the US at a minimum, because I think Japanese numbers in America in 1890 were quite small. However, it wouldn't single out Japanese as "less than" Europeans in the 1924 act.
Could the US leaders (in the executive branch or majority leadership) have avoided adding insult (outright exclusion) to injury (drastically limited quotas) and remained politically healthy?
If so, how many Japanese would have immigrated to the US between 1924 and 1941?
What reverberations, if any, might this have on domestic Japanese politics, and Japanese immigration to other areas (like Brazil)?
Presuming an American-Japanese war still happens at some point by mid-century, how is the composition of the Japanese-American community changed?