The move came after a Republican congressman from California announced plans to try to force a vote next week, over strong conservative opposition, on his measure creating a path to citizenship for immigrants who were brought illegally to the U.S. as children and serve in the military. Heritage Action, the group's political arm, announced it would include the vote in its ratings on lawmakers and called Denham's legislation "deplorable." Cantor himself, who previously had supported offering a path to citizenship for immigrants brought illegally as children, faces a primary challenge in Virginia June 10 from a tea party opponent who has criticized the majority leader for not being conservative enough and accused him of supporting amnesty for immigrants living here illegally. Dave Brat, an economics professor at Randolph-Macon College, is a long-shot to unseat Cantor, but his campaign has won attention and support from conservative leaders such as radio host Laura Ingraham, partly because of his attacks against Cantor over immigration.