Total student loans are about $1.8 trillion. SCOTUS blocked forgiveness on $400 billion of that.

Trump-led tax cut policies reduced revenues by ~$1.5 trillion in his first term, and ~$5 trillion in his second term. $800B of PPP loans were forgiven. The oft-cited ICE and CBP budget increases were about $140 billion.

I can't find many other policies championed by Trump that accounted for increases >$200B in increased spending. As a result, there's not really any good 1:1 "Trump is willing to spend $400B on $X but not student loans". Most of his national debt impact has been via tax cuts rather than spending. Where spending did increase in large amounts, it was mostly for the Pentagon, and some % of those increases likely would have occurred under any other administration - so it's hard for me to carve out what Pentagon budget increases were due to his policies vs. the base-case for how much they would have increased otherwise.