Euro Cup was a big uproar for their yellow card policy
Under the current rules for the European Championship, if a player picks up two yellow cards before the semifinals, they are suspended for the following game. Yellow card accumulation does not carry over past the semifinals, meaning the only way a player can be suspended for the final is by being sent off in the semis.
But to just wipe the slate clean because we want our best players eligible for the final, meh. Not for me, I'd rather exploit opponents with suspended players.