WASHINGTON — Like many presidents before him, President Trump is pushing a bold budget proposal. But for a business executive used to getting his way, he is likely to find, as his predecessors did, that final budgets often bear little resemblance to the originals after being run through the shredder on Capitol Hill.

Here is a look at some of the main issues hanging over the coming budget and spending fight.

What are the overall prospects for the deep domestic spending cuts proposed in the Trump budget?

Taking the ax to the Environmental Protection Agency or to State Department aid programs may excite Mr. Trump’s supporters, but he is unlikely to succeed to the extent he would like.

His budget is simply a starting point and any cuts would have to be made through the congressional appropriations process. Though in the minority, Democrats retain significant leverage in crafting that legislation and can block bills they oppose in the Senate.