It is possible and this in particular is a decision that I'm sure the US will pressure the government to reverse. However, it's misguided to see the entire world through the US political lens where reversing policy decisions is seen as a free win by the voting base. Spain's current democracy is only about fifty years old and extremism is viewed very negatively so outright undoing is generally less common then gradual undermining.
It is possible and this in particular is a decision that I'm sure the US will pressure the government to reverse. However, it's misguided to see the entire world through the US political lens where reversing policy decisions is seen as a free win by the voting base. Spain's current democracy is only about fifty years old and extremism is viewed very negatively so outright undoing is generally less common then gradual undermining.