Final answer:
Grassfire.org led the drive to kill the 2007 immigration reform bill supported by President Bush and a number of congressional Democrats. In response, millions of immigrants and other critics of the bill protested the deep divisions over immigration and the status of undocumented immigrants in the United States.
Step-by-step explanation:
The correct answer to the question is (c) Grassfire.org.
Grassfire.org led the drive to kill the 2007 immigration reform bill supported by President Bush and a number of congressional Democrats. Grassfire.org is a conservative grassroots organization that focuses on issues such as immigration, national security, and limited government.
In response to the bill, millions of immigrants, along with other critics of the bill, took to the streets in protest. This event highlighted the deep divisions over immigration and the status of undocumented immigrants in the United States.