Republican Sen. Orrin Hatch said Tuesday he will not seek re-election after serving more than 40 years in the Senate.
Donald Trump's unpredictable, pugnacious approach to the presidency often worked against him as Republicans navigated a tumultuous but ultimately productive year in Congress.
The Justice Department has made clear its proposed ban on transgender military recruits is on hold, meaning their enlistment can start Monday.
Democrat Doug Jones' historic victory over Republican Roy Moore was declared official Thursday, despite Moore's last-minute lawsuit claiming voter fraud.
President Donald Trump restarted the refugee program in October "with enhanced vetting capabilities."