LOS ANGELES - Former Secretary of State Colin Powell endorsed Joe Biden on the second night of the 2020 Democratic National Convention, adding his voice to a list of notable Republicans who have made appearances at the all-virtual event in opposition to President Donald Trump ahead of the 2020 election.“With Joe Biden in the White House, we will never doubt that he will stand with our friends and stand up to our adversaries — never the other way around,” Powell said Tuesday night in taped remarks.RELATED: DNC Day 2: Biden secures Democratic nominationPowell, the former cabinet member under Republican President George W.