With one week to go until the U.S. presidential election, Democratic challenger Joe Biden is maintaining a lead in national polls over Republican President Donald Trump who continues to face questions over his handling of the coronavirus pandemic.Both candidates are making their final pitches in battleground states, seeking to cast themselves as a more viable leader to ride out the pandemic and its resulting economic setback as well as the recent flaring up of civil unrest over police brutality against black people.Biden, the 77-year-old former vice president, is leading Trump by around 8 p…READ FULL ARTICLE