Answer:
After Congress passed the funding bill
Explanation:
A subordinate clause is a dependent clause that doesn't express a complete thought. It relies on another clause or sentences for it to express a complete thought.
In the sentence given above, the subordinate clause in the sentence is "after Congress passed the funding bill". This subordinate clause is a form of adverb clause that answers the question of "when".
"After Congress passed the funding bill", in the sentence given, answers "when did the president agreed to sign the funding bill into law?"
