As Donald Trump hits his 100th day in office Tuesday, his imprint is everywhere. But the long-term impact is often unclear.

For Trump’s allies, the past 100 days of disruption are a welcome antidote to the failures of their own institution, while his opponents see something ‘deeply dangerous.’

Congress is proving to be almost no match for this White House. Trump is testing, challenging and even bullying the Congress in unparalleled ways -– slashing government agencies, deporting legal migrants,