DACA itself is interesting. Are we talking about current daca holders? People eligible daca? Aged out DACA? or even DAPA?

It's possible for them to cut a deal for current DACA holders for border security, and the democrats can still campaign for DACA eligible people or more in the 2020 election. If democrats get nothing and gives up more money for the wall after this meeting, you can be more sure that they want all forms of DACA to be a 2020 issue. It'd also be a bad deal since democrats got nothing. We'll see I guess.