It is obvious that the writer is not very well schooled, the quality of his writing is pathetic.
Hyperbole is used here. But doesn’t Donald himself use hyperbole? Hyperbole is often used as an idiom of warning about where the author fears affairs will go.
I doubt now that Donald actually will get a “bigly” advance on immigration. While progressives will have trouble progressing, they can and will throw sand in the political gears with gusto.