However, Fifa’s taskforce said it had obtained “enforceable government guarantees” which state the 12 host cities in Morocco will have a sufficient number of hotel rooms by 2026.
The North American bid did not contain any high risk elements but had three medium risk measures – government support, human rights and labour standards, and organising costs.
In analysing the human rights aspect of the bid, it was concluded new entry regulations being proposed by the US could damage “discrimination-free entry” to the country.
World football’s governing body could have disqualified Morocco had the bid scored less than two overall.
Both candidates now have to be approved at a meeting on 10 June before a vote of the 207 Fifa members three days later.
Morocco has said it needs to spend almost $16bn (£12bn) on infrastructure for what will be the first 48-team World Cup, while the North American bid does not require any tournament-specific building work.
Morocco has unsuccessfully bid four times before, in 1994, 1998, 2006 and 2010, the latter occasion being when South Africa became the first African nation to host the World Cup.
The United States hosted the tournament in 1994 and bid unsuccessfully for 2022, while Mexico staged the 1970 and 1986 tournaments.