Can improvised weapons qualify as one handed weapons for the purposes of the Dual Wielder feat?

@JeremyECrawford Can improvised weapons qualify as one handed weapons for the purposes of the Dual Wielder feat?

— Adam Hansen (@AdamInvests) May 4, 2016

Dual Wielder is intended to work with actual weapons. Using the feat with improvised weapons is up to the DM. #DnD https://t.co/ochY54FFET

— Jeremy Crawford (@JeremyECrawford) May 9, 2016