Trump's $1.5T Pentagon budget

White House Budget Director Russell Vought defended the request in a series of testy congressional hearings, arguing that a large upfront investment is necessary to maintain military readiness.

However, some lawmakers cited the Pentagon's historic lack of fiscal transparency and questioned the feasibility of such a significant spending surge.

The budget also includes controversial plans for nuclear reactors in the moon's orbit and a new 'combat credible' Space Force.

The internal GOP divide over defense spending presents a potential obstacle for the administration's broader fiscal agenda.