The new restrictions on Russia will be weaker than before. In Tokyo and Beijing, Russia will be able to field athletes whose files in the Moscow doping lab database were altered or deleted while the data was under the control of the Russian state.
The CAS ruling is the latest stage in a long-running battle between WADA and Russia.
USADA chief executive Travis Tygart said the sanctions would be undermined since athletes would still be able to compete in uniforms in Russian colours with the word "Russia" on them.
Russian athletes and teams will still be allowed to compete at next year’s Tokyo Olympics and the 2022 Winter Games in Beijing, as well as world championships including the 2022 World Cup in Qatar
The ban, as it stands, means Russia would miss the re-arranged Tokyo Olympics 2020 next year as well as football's 2022 World Cup in Qatar and the 2022 Winter Olympics in China.
An updated version of the Code published by the World Anti-Doping Agency (WADA) will enforce a conflict of interest policy that prohibits members of national Olympic or Paralympic committees, sports federations and organisations from sitting on the board of their country's anti-doping agencies.
The ensuing ban meant Russia would miss the re-arranged Tokyo Olympics next year as well as football's 2022 World Cup in Qatar and the 2022 Winter Olympics in China.
The CAS panel of judges from Australia, France and Italy are unlikely to give a ruling for at least several weeks.
The three-judge panel has been asked by the World Anti-Doping Agency to ban Russia's name, flag and anthem from the Tokyo Olympics and 2022 Winter Games in Beijing, plus four years of world championships.
The slate of punishments proposed by WADA includes a ban on Russia’s flag, anthem and team name at the Tokyo Olympics next year and the 2022 Winter Games in Beijing.
Ganus, 56, was forced from his role after the Russian Olympic Committee in July published an audit of RUSADA that exposed alleged financial violations.
Russian anti-doping body chief Yuri Ganus slams allegation of misappropriating agency funds as a ‘complete lie’
RUSADA director Yuri Ganus, who was appointed to the role in 2017, did not name who he thought might be behind the allegations of him misappropriating agency funds.
CAS to hear Russian anti-doping agency’s appeal against country's four-year ban from Olympics in early November
In a list of hearings published on its website, CAS wrote that the appeal by RUSADA against sanctions imposed by the World Anti-Doping Agency (WADA) would take place from 2-5 November this year.
Coronavirus Outbreak: Russian anti-doping agency to resume testing after hiatus imposed due to lockdown measures
RUSADA was suspended in 2015 after WADA found evidence of mass doping in Russian athletics
Russian anti-doping agency RUSADA said it was temporarily halting all testing in response to government measures aimed at curbing the spread of the coronavirus.
Doping tests around the world wind down because of coronavirus pandemic; WADA says it is monitoring situation
Although anti-doping organisations around the world are dialing back on testing because of the coronavirus outbreak, Olympic athletes can still expect a knock on the door.
Tokyo Olympics 2020: Anti-doping bodies dial down testing due to coronavirus but Games-bound athletes still asked to give dope test
The International Olympic Committee has said it remains fully committed to opening the Tokyo Games on 24 July, so testers are still visiting some athletes at a time when many people are trying to avoid social contact
Tokyo Olympics 2020: WADA calls for public adjudication as Court of Arbitration for Sport prepares to hear Russia's doping ban case
The CAS panel of three judges will have power to enforce WADA-recommended sanctions including a ban on Russia’s team name, flag and anthem at Olympic Games and world championships
Russian Athletics Federation board resigns over failure in mending rocky relationship with governing body World Athletics
The Russian Athletics Federation has been suspended by World Athletics since 2015 over widespread doping, but the crisis has deepened in recent months
Banned Russian race walking coach Viktor Chegin still working with athletes at training camps, says RUSADA official
In 2018 five Russian race walkers were stripped of their clearance to compete internationally as neutrals pending further investigation of their participation in a training camp with Chegin in Kyrgyzstan