Most Republicans running for still-in-play US Senate seats are endorsed by the pro-immigration-amnesty US Chamber of Commerce. Consider those listed below without NumbersUSA high rankings or recommendations in parentheses to be sympathetic to amnesty when it comes time to vote on immigration reform, despite what they may say to get elected. The US Chamber doesn't endorse lightly these days, and it wants more cheap labor in this country, which comes at the expense of already unemployed and underemployed Americans.
Endorsed by the US Chamber:
Mitch McConnell in Kentucky (B+)
Thom Tillis in North Carolina
Thad Cochran in Mississippi (B+)
Tom Cotton in Arkansas (B+)
Joni Ernst in Iowa
Scott Brown in New Hampshire (D+)
Steve Daines in Montana (C+)
Corey Gardiner in Colorado (F-)
Mike Rounds in South Dakota
Shelly Moore Capito in West Virginia (C+)
Dan Sullivan in Alaska
Pat Roberts in Kansas (rated A+ by NumbersUSA)
Ed Gillespie in Virginia
Jim Oberweis in Illinois (used to be opposed to amnesty, but not now)
Terri Lynn Land in Michigan
Mike McFadden in Minnesota
Monica Wehby in Oregon
Not endorsed by US Chamber:
Ben Sasse in Nebraska
David Perdue in Georgia (rated "true reformer" by NumbersUSA)
Bill Cassidy in Louisiana (rated A- by Numbers USA)
Endorsement uncertain:
Jeff Bell in New Jersey
Allen Weh in New Mexico