Yes, there are opportunities for same-sex duos, and larger groups, to compete in showcase-type programs in the US as well.
There are many ways in which teams of different compositions can create captivating duets with a variety of themes and styles, featuring the skills that have.
What many, especially otherwise well-matched female-female teams, will not be able to do is overhead lifts.
I'm not talking about complex level 4 lifts. Even simple
group 1 and group 2 semi-overheads would be rare for F/F teams to be able to achieve. The simple
group 3, 4, and 5 lifts seen in the 1960s would be even harder to achieve.
Currently, such lifts are required elements in pair skating beginning at Novice level in Canada. (Pre-Novice can stick to groups 1 and 2.)
Skate Canada Competition Program Requirements:
info.skatecanada.ca
Also, while single twists might be possible, I don't see double twists as an option.
So where would a team of two women or older girls who are otherwise strong junior or senior level skaters fit in?
Ditto for male/male or even mixed pairs who don't an appropriate significant size difference?
Dance lifts would not be an issue, although the higher levels by IJS standard might be harder to achieve.