In return, the sole flag carrier of the small country at the other end is allowed to collude on fares and capacity with its chosen American partner, without being clobbered by antitrustlaw.
Long story short, American Needle Inc. argued that the NFL violated antitrustlaw because all 32 NFL teams worked together to freeze it out of the NFL-licensed-brand-hat-making business when they gave that exclusive right to Reebok for ten years.