Sens. Kyrsten Sinema (I-Ariz.) and John Cornyn (R-Texas) announced that a party of eight U.S. Senators—three Democrat, four Republican, and one Independent—will visit the U.S.-Mexico border in El-Paso, Texas, to observe first hand what Sinema called “Washington’s failure.” Those joining them Monday and Tuesday will be Sens. James Lankford (R-Okla.), Mark Kelly (D-Ariz.), Thom Tillis…