The most common and accurate translation is:
**Hacer a América grande otra vez.**
This is the direct translation that Donald Trump used during his campaign.
Here are a couple of other options, although they are less common:
* **En Grandecer a América** (To make America bigger/greater)
* **Volver a hacer grande a América** (To make America great again)
However, **Hacer a América grande otra vez** is the most recognizable and widely used translation.