Even as recently as a year ago, even the most cleareyed analysts thought it was a long shot. But this week, a child tax credit is expected to be passed into law, as part of the economic stimulus bill.The child tax credit is an income guarantee for American families with children. It will provide a monthly check of up to $300 per child — no matter how many children.We look at why this provision is so revolutionary and what has changed in the policy landscape to allow its passage.  Guest: Jason DeParle, a senior writer for The New York Times and frequent contributor to The Times Magazine. Sign up here to get The Daily in your inbox each morning. And for an exclusive look at how the biggest stories on our show come together, subscribe to our newsletter. Background reading: The $1.9 trillion pandemic relief package moving through Congress advances an idea that Democrats have been nurturing for decades: establishing a guaranteed income for families with children.What’s in the stimulus bill? Here is a guide to where the money will be going. For more information on today’s episode, visit nytimes.com/thedaily. Transcripts of each episode will be made available by the next workday.