Machine-assisted voting - either via voter-facing touch screens or behind-the-scenes ballot tabulation software and digital poll books - has for years been the subject of persistent worries over security and reliability.
（both of whom had held off on acknowledging Bidens victory.Longtime advisers Mike Donilon and Steve Ricchetti will join as senior adviser to the president and counselor to the president.
還Ethics rules are also enforced by regulatory bodies.
國before administering it to a health worker during its trials.
個It was a severe blow to Russian sport which has been tarnished in recent years by a string of doping scandals.
Army Garrison Yongsan and Camp Humphreys - until Tuesday after a cluster of coronavirus infections.