Article snippet: questions surrounding Warren's claims of Native American heritage. A Washington Post fact-checker wrote in 2016 that there was "no official documentation" found to support her claims. Heller is seen as a vulnerable Republican ahead of midterm elections, where Democrats are hoping to pick up two seats and flip the Senate. But, the Nevada lawmaker has secured Trump's support and saw a primary challenger back out of the race earlier this year at the president's urging. Tickets for Saturday's fundraiser for Heller ranged from $15,000 to $50,000, according to an invitation obtained by CNN. An April poll of the Nevada Senate race showed Heller leading Rosen by just 1 point, according to the Nevada Independent/Mellman Group survey. — Updated 6:03 p.m. The Hill 1625 K Street, NW Suite 900 Washington DC 20006 | 202-628-8500 tel | 202-628-8503 fax The contents of this site are ©2018 Capitol Hill Publishing Corp., a subsidiary of News Communications, Inc. Link to the full article to read more