Nobody in this administration or the last several has demonstrated any concern over the growing national deficit. It is a thing that gets politicized often, usually portending doom and gloom, but the value of the US Dollar is predicated on faith and very little else. US Treasuries being considered one of the most stable assets into which one can put money. I don't think anyone is really certain the extent to which that can be leveraged. This is a topic of debate among many economists with way more knowledge on the topic than I have.
For one, I very seriously doubt that analysis and for two, that'd still represent less than 2% of the annual federal budget.
If they were looking to save spending wherever they would be going after the military industrial complex, specifically, contractors and suppliers in total receive ~6.5% of the total federal budget, while civilian federal employees comprise about 5% of the federal budget in total. If 20% of those are superfluous that saves roughly 1% a drop in the bucket compared to military discretionary spending, which is where DOGE should be focused, but is not.
In this, you are correct.
Not so much. It's about presenting a plausible threat in the trade war against China. Right or wrong, 45 has a rather simplistic view of global trade and seems to feel that the US has fared poorly in this regard. The threats of tariffs seem intended to yield concessions from our "enemies".
Thus far, that seems to have worked, at least to the extent that he's been appeased. Whether or not actual concessions become manifest remains to be seen. With regard to de minimis exceptions, I think the pressure to crack down on it comes from corporations in the US that can't manage to complete with the likes of Temu. What the hell was Bezos doing at the inauguration I wonder?