A citizen activist in Georgia, who has spent more than a decade opposing comprehensive immigration reform efforts because he says it will lower the wages of working class Americans, plans to put up billboards in South Carolina this week aimed squarely at Sen. Lindsey Graham (R-SC) and Rep. Trey Gowdy (R-SC).

D.A. King, whom the New York Times profiled this week, told Breitbart News that he and his organization, the Dustin Inman Society, have put up similar billboards in the past across Georgia that played a large part in influencing Georgia Sens. Saxby Chambliss (R) and Johnny Isakson (R) to vote against the Senate’s immigration bill.

The billboard says the “Lindsey Graham-Barack Obama” amnesty plan will bring in “more foreign workers” to “lower wages.”

Graham was a part of the “Gang of Eight” that wrote the Senate bill. Gowdy has indicated he favors a path to citizenship for illegal immigrants “brought to the country as youths, military veterans, and certain others who’ve lived here for years and contributed to society” when the House takes up immigration reform after the August recess.

King hopes the billboards can pressure Gowdy to drop his support for a path to citizenship and to inform South Carolina’s voters about Graham’s record as he faces primary challenges. Nancy Mace, who was the first female graduate of The Citadel and whose father, a retired Brigadier General, is the most decorated living member of The Citadel, may be Graham’s most formidable challenger.

Other billboards King has put up have called the Senate’s immigration bill the “RubiObama” amnesty bill. Another reads, “Protect American Jobs! Stop Amnesty for Illegal Aliens.”

King left his small business to become an immigration activist more than a decade ago after he went to the Arizona border and studied the issue. He has repeatedly emphasized the importance of assimilation and the devastating impact illegal immigration and comprehensive immigration reform will have on America’s working class.