FIRST ON FOX: Nevada Sen. Jacky Rosen, a Democrat facing an uncertain future in Congress, is under scrutiny because of her backing of President Biden and Vice President Harris, particularly concerning their approaches to inflation and illegal immigration, just ahead of a close Senate election in the state come November.“Jacky Rosen rubber-stamped the Biden-Harris agenda over 95% of the time,” a new independent expenditure ad from the National Republican Senatorial Committee (NRSC) tells viewers. Titled “Failed,” the ad will run across Nevada on both TV and digital platforms. It is part of the NRSC’s $100 million advertising blitz across the country.CASEY TIED TO CHI …