Germany, US race to improve relations in Biden's first 100 days Ready, reset, go: US President Joe Biden has little time to spare tackling an array of pressing issues at home and abroad. One of his most urgent tasks has been to rebuild trust in the trans-Atlantic relationship. In his first 100 days in office Joe Biden has tackled pressing issues at home and abroad Nearly a century of US presidents have been held to the 100-day yardstick. It is largely symbolic, but underscores how short a four-year term can be. For President Joe Biden, there is a lot to do in that time.