Is Trump's wall going to be built bit by bit?

I think it's safe to say that Trump will never be given $5.7 billion in one big instalment to start building his wall along the Mexican border. But the way things are going he WILL get his wall eventually by building it bit by bit by bit. The trouble with that is that Trump will never be able to say to his very conservative supporters: "Congress has given in. My wall will be built by, say, March 2020." The deal that has been reached in principle between the Republicans and Democrats includes an offer of $1.375 billion - nowhere near what Trump wants - for new fencing along 55 miles of the border. But this so-called deal which Trump has already said he doesn't like is more to do with avoiding a government shutdown again than actually any sort of agreement to meet Trump's demand for a 2,000-mile wall. Friday is the crucial day when the government either partially shuts down or the president goes along with the offer of at least some cash for his favourite project. But take note that the "deal" talks about fencing, not a wall. Trump has said as long as it looks like a wall that no one can climb over, he doesn't mind what you call it, wall, or fencing or barrier. But however you look at it, 55 miles of extra fencing is never really going to please Trump. He envisages a huge obstruction that will keep out illegal immigrants, drugs traffickers and every type of criminal who wants to get in to the US one way or another. His supporters will view $1.375 billion as a pittance, especially when you know that a new wall along 2,000 miles would cost in the region of £20-30 billion. However, Trump does not want another shutdown and if he summarily rejects the deal on offer which by the way looks remarkably like the one offered the last time there was a shutdown, then voters might blame him and not the Democrats in Congress for removing 800,000 federal workers' pay checks. The wall is going to be Trump's undoing unless the Mueller investigation gets him first!