House Majority Leader Eric Cantor is the latest target of immigration advocates who are frustrated with the House's lack of movement on the Senate-passed immigration reform bill. 

Cantor is one of the primary Republican lawmakers credited with the House's failure to pass the comprehensive immigration reform bill that was passed by the Senate last June. The bill provides a pathway to citizenship for the country's estimated 11 million undocumented immigrants, and also tightens border security. 

"Eric Cantor is the No. 1 guy standing between the American people and immigration reform," said Frank Sharry, executive director of America's Voice, a pro-immigrant group. 

Cantor faces a primary election challenge in Virginia on June 10 against a Tea Party member, and is therefore presenting a hardline view on immigration, The Associated Press reports. 

While Cantor and Bob Goodlatte, the chairman of the House Judiciary Committee, announced that they would present a bill last summer to offer citizenship to people brought to the country illegally as children, the bill was never introduced. 

Rep. Jeff Denham, R-California, also said Cantor promised last year to help him bring the ENLIST Act to a vote, which grants citizenship to immigrants who were brought to the states illegally as children, and now serve in the military. However, Cantor's office said Friday that Denham's bill will not come to the floor this year for a vote. 

Doug Heye, Cantor's spokesman, said Cantor still supports the bill, but he never committed to bringing the legislation to a vote. 

"On the issue of kids, he thinks that's a great place to start and wants to continue to work on that. He supports the principle behind the ENLIST Act," Heye said. "These are things that he believes because they're the right things for him to do. It's not a political calculation. Eric Cantor's position on immigration remains consistent."

Cantor's main opponent in the upcoming primary is Dave Brat, an economics professor at Randolph-Macon College. Earlier this month, Virginia conservatives unseated one of Cantor's colleagues as chairman of a local Republican committee, and voted in a Tea Party favorite.

Prior to the primary election season, Cantor was seen as one of the House Republicans who is the most opposed to immigration reform. 

Conversely, House Speaker John Boehner, despite recently dragging his feet on an immigration reform vote, has repeatedly said that he wants to deal with the pressing issue. 

Cantor is more reluctant, and has not acknowledged Republicans' poor standing with Latino voters due to their reluctance to embrace immigration reform. 

Cantor, who may aim to become Speaker of the House in the future, is also supported by Tea Party members, who are largely opposed to the passage of immigration reform.