The super PAC affiliated with Senate Majority Leader Mitch McConnell, R-Ky., is squeezing Rep. Mo Brooks over acceptance of trip to China with his wife that was financed by groups supportive of comprehensive immigration reform.

Senate Leadership Fund backs appointed Sen. Luther Strange in the Aug. 15 special Senate election, and with two weeks to go in the race is keeping the pressure on Brooks by attempting to tie him to groups that oppose President Trump’s get-tough immigration policies. The super PAC obtained the information on Brooks’ trips — legal and conducted according to the rules — from required congressional filings.