The Service Employees International Union is launching Spanish-language radio ads aimed at pressuring a dozen House Republicans to support immigration reform.

The $200,000 in ads target Republicans who represent a large number of Hispanics, and were announced as the House GOP conference prepares for a Wednesday meeting to discuss the way forward on immigration reform. 

"The debate over immigration reform has reached its deciding moment," the ad begins, before playing clips of Reps. Paul BrounPaul Collins BrounCalifornia lawmaker's chief of staff resigns after indictment Republican candidates run against ghost of John Boehner The Trail 2016: Let’s have another debate! MORE (R-Ga.) and Randy WeberRandall (Randy) Keith WeberDemocrats dig for Russian connection and uncover environmentalists Lobbying World GOP worries as state Dems outperform in special elections MORE (R-Texas) calling illegal immigrants "criminals" and "takers."

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The ad then asks the congressmen to choose the side of "true patriots — business owners, religious leaders and elected officials from both parties" who support immigration reform that includes a pathway to citizenship for the nation's illegal immigrants. 

The ads target GOP Reps. Jeff Denham (Calif.), David Valadao (Calif.), Gary Miller (Calif.), Buck McKeon (Calif.), Scott Tipton (Colo.), Mike Coffman (Colo.), Daniel Webster (Fla.), Joe Heck (Nev.), Mark AmodeiMark Eugene AmodeiDACA advocates see efforts gaining steam in the House Overnight Finance: House passes .2T funding package for 2018 | FTC launches Equifax probe | Mnuchin defends honeymoon jet request | House scraps measure to boost credit union regulator oversight MORE (Nev.), Ted PoeLloyd (Ted) Theodore PoeSeven Texas lawmakers leaving Congress means a younger, more diverse delegation Clock ticking down on NSA surveillance powers Mounting GOP retirements threaten House majority MORE (Texas), Pete Olson (Texas) and Weber.

Valadao's district is 70 percent Hispanic, while Miller's is 50 percent Hispanci, according to U.S. Census data. Denham's and McKeon's are both 40 percent Hispanic.

The group isn't the only one to take to the air on immigration ahead of Wednesday's GOP meeting: the pro-reform conservative group American Action Forum is running ads on Fox News encouraging the House to take up border security.