Career civil servant Mark Sandy testified on Nov. 16, 2019 that he was told that military assistance to Ukraine was put on hold by Trump because Trump was concerned other countries were not contributing more to Ukraine:
Mr. Sandy: I recall in early September an email that attributed the hold to the President's concern about other countries not contributing more to Ukraine. ... Mr. Meadows: And, all of a sudden, we get some additional information that's provided in terms of what other countries contribute to Ukraine aid, and then the aid was released. Is that a fair characterization? Mr. Sandy: In terms of the sequencing, yes.