US historian Gary Gerstle the waning power of the US Congress

The US Congress is the institution that most directly represents the will of the people: 535 representatives divided into two houses. Despite the importance of Congress, there's been an increasing trend for presidents to bypass the body and issue executive orders to achieve political goals. US historian Gary Gerstle unpacks the shrinking role of Congress, political polarisation, and whether the centre-left is the Democrats' sweet spot.