Top Democrats, including President Barack Obama, have been scrambling to secure lawmaker support on a climate bill that would limit the pollution blamed for global warming and create a cap-and-trade system for greenhouse gas emissions. The House is set to vote on the landmark bill as early as Friday.

President Obama urged the House to pass the bill that he said will create millions of jobs.

Judy Woodruff speaks with guests about the potential impact of climate change legislation being debated and its chances for passage in Congress.