question: Why were Black politicians upset about the change in immigration laws ?
answer: accused the government of using this device to counter the West Indian immigration of previous decades .
turker_answer: Black politicians were upset about the change in immigration laws because they accused the government of using this device to counter the West Indian immigration of previous decades .
rule-based: Black politicians were upset about the change in immigration laws because accused the government of using this device to counter the West Indian immigration of previous decades .