Washington (AFP) – President-elect Joe Biden is expected to unveil plans Thursday for fighting Covid and restoring the economy, but the ambitious first 100 days agenda is already overshadowed by the looming Senate trial of his soon-to-be predecessor Donald Trump. On the day after Trump was impeached in the House of Representatives — becoming the first US president in history subjected to a second impeachment — Biden hopes to seize the narrative and get Americans looking forward again. In a primetime speech, he is expected to address a twin crisis exceeding even the challenge that faced him a…