Have you read a book called "The Law that Changed the Face of America: The Immigration and Nationality Act of 1965."?

Have you? Because it doesn't sound like it, if you're quoting Zaid Jalini's statements about it, instead of specifying it in your own words.

. “He did more than anyone to lobby for the repeal of the National Origins Quota Act,” she writes,

Pro tip: legislators often lobby their colleagues. That doesn't make them 'lobbyists'.