Let’s remember that Trump is generally very clever and knows what he’s doing. Methinks he will use the delay as another opportunity to harpoon Her Stretchness Pelosi.
He's got a lot on his plate this week too...
Upcoming talks with China on trade
Upcoming talks with North Korea
Venezuela (which includes Russia, China and Turkey)
Having to fight with Pelosi over a measly $6 billion for a wall is the least of his projects right now.