NEW: 38 Democratic senators - led by Kaine - send Secretary of State Rubio a letter seeking answers re: Trump admin's "brazen & illegal attempts to destroy" USAID

Dems NOT signing on:

Cantwell + Murray (WA)
Hassan + Shaheen (NH)
Alsobrooks (MD)
Fetterman (PA)
Lujan (NM)
Ossoff (GA)
Schumer (NY)