presidential candidate since bill clinton in the 90s has used, it s the economy, stupid. well, that phrase is still big news if you want to call the white house home. the u.s. president donald trump gets that. but even as he continues to publicly tout the strength of the u.s. economy, sources tell cnn he is privately concerned about his strongest political asset. our sarah westwood has this report from the white house. reporter: president trump has been pushing aides to come up with plans to mitigate the effects of a potential economic downturn. amid his own private concerns about economic growth. plans have included new tax cuts, indexing capital gains, and renewed push on capitol hill to pass his renegotiated version of nafta, usmca which stalled in the house for months. the president and his advisers know that trump s fate is tied closely to that of the economy. they know it s his number one selling point heading into 2020. president trump this weekend is