While President Donald Trump has been cleared of charges of Russian collusion, there is a better case of Russian collusion to be made against another U.S. leader: former Vice President Joe Biden. An investigation into Biden’s Russian ties is long overdue and urgent, as he is likely to declare his campaign for the Democratic Party presidential nomination sometime soon. While widely regarded as the moderate face of the Democratic Party, that perception might change quickly if more people were aware of his past work to further the interests of the former Soviet Union and Russia. Biden visited the Soviet Union...