The Federation's board of directors plans to discuss the new policy on Tuesday and a formal vote is scheduled for Friday. If approved, the policy would take effect immediately, but will also need to be approved at the next annual general meeting next year.
CNN contacted US Soccer but did not receive a response.
The policy prohibiting players from kneeling during the anthem was adopted in response to American women's national team midfielder Megan Rapinoe kneeling for the national anthem before a 2016 game against Thailand.
"All persons representing a national team of the Federation must respectfully observe the reading of the national anthems at any event in which the Federation is represented", states policy 604-1.
Kaepernick, the quarterback who led the 49ers to the Super Bowl in 2012, unleashed a storm of criticism when he sat in protest at the national anthem for a preseason game, saying he didn't would not honor a song or "show pride in a flag for a country that oppresses blacks and people of color."
