Former President Barack Obama would defeat President Donald Trump by a double-digit margin if both were eligible to run for a third term, according to a new hypothetical poll.Why It MattersThe polling could offer a view of Americans' attitudes toward Obama and Trump,

A new poll found that former President Barack Obama would defeat Donald Trump by a double-digit margin in a hypothetical matchup for a third presidential term.

The Trump administration has proposed curbing the government’s ability to regulate greenhouse gases by unwinding rules that control emissions from fossil fuel drilling, power plants and cars. Environmental Protection Agency administrator Lee Zeldin on Tuesday announced the proposed rollback of a 2009 declaration from Barack Obama’s administration that determined carbon dioxide and other greenhouse gasses were a danger to public health.