根据wiki资料,这个史称排华法案(Chinese Exclusion Act)的歧视华人的恶法发生发展的大致脉络如下。
https://en.wikipedia.org/wiki/Chinese_Immigration_Act,_1923
1. The Chinese Immigration Act of 1885 placed a $50
head tax on
Chineseimmigrants coming to
Canada.
[1]
2. In 1900, the fee was raised to $100 (a substantial amount of money at that time).
3. In 1903, the amount was raised to $500, the equivalency of two years' wages
4. Later, another law was passed, declaring that only one Chinese immigrant could come to Canada for every fifty tons (50.8 tonnes) of the
ship they were travelling on, for that one voyage.
5. This act was eventually superseded in 1923 by the
Chinese Immigration Act of 1923, also known as the
Chinese Exclusion Act (not to be confused with the
Chinese Exclusion Act of 1882), which banned Chinese immigration entirely.
[2]
对应当时的政党轮替情况整理如下。
1878-1896 保守党:在美国压力下(wiki原文如此)通过1885年华人移民法案,每个中国人缴纳 $50,这在当年也是一个可以负担的数字,相当于现在的落地费;
保守党在此后11年内维持不变;
1896-1911 自由党:自由党执政
四年后于1900年将人头税翻番到每人$100,再过3年巨增到$500每人,相当于当时两年的工资。
自由党执政7年,分两次增加了10倍!
1911-1921 保守党:
保守党再执政10年,没增一分一厘;
1921-1930 自由党 (中间保守党于1926年6 到9月 短暂执政三个月不到):
自由党再次上台两年后干脆于1923年通过法案完全禁止华人移民!