Crossword Clue:

that cannot be debated

AnswerCrossword Clue
INDELIBLEThat cannot be forgotten
TRESSLock that cannot be opened
DRAFTCall to arms (that cannot be denied).
BOHREINSTEINTwosome that debated quantum mechanics at the Solvay Conference
WEBSTERCALHOUNTwosome that debated states' rights on the Senate floor
KENNEDYNIXONTwosome that debated U.S. policies on 1960 television broadcasts
LINCOLNDOUGLASTwosome that debated the extension of slavery on the campaign trail