Past agreements are no guarantee of anything. I think I understand just fine!
Appropriations Clause
“No Money shall be drawn from the Treasury, but in Consequence of Appropriations made by Law; and a regular Statement and Account of the Receipts and Expenditures of all public Money shall be published from time to time.
Article I, Section 9, Clause 7
The Appropriations Clause is the cornerstone of Congress’s “power of the purse.” It assigns to Congress the role of final arbiter of the use of public funds. The source of Congress’s power to spend derives from Article I, Section 8, Clause 1. The Appropriations Clause provides Congress with a mechanism to control or to limit spending by the federal government. The Framers chose the particular language of limitation, not authorization, for the first part of the clause and placed it in Section 9 of Article I, along with other restrictions on governmental actions to limit, most notably, executive action.”
Schumer made one agreement to re open government until 2/8/18 , and was attacked by Dems, then backtracked on what Dems would do on that date, trying to play hardball, simple.....not complicated! Schumer threatens again on Spending for Government Funding... over Wall now. This was a temporary fix for Spending Bill, and 6 yrs for Chip. Where have you been?
You say past,agreements are no guarantee. If a law is passed in a previous Congressional session is it good when session ends? If the funds were authorized as part of legislation passed and signed then why is that authorization not still in place? Was there other legislation passed to overturn the original authorizing the wall?