From the BBC: German parliament moves to partially ban the burka.
Proposals or measures in France, Netherlands, UK, and elsewhere, have also focussed on a ban of the burqa. Although I have certainly seen women in niqābs in Amsterdam, Birmingham, and elsewhere, but I have never¹ seen a person in a burqa.
The niqāb is commonly worn in Arab countries, whereas the burqa is more associated with Afghanistan. Both cover the face, yet somehow the debate is always about the burqa. I don't recall ever seeing a proposal to ban the niqāb.
Regardless of whether one supports such a move: what is the rationale for banning the (extremely rare) burqa, but not the (rare but not as rare) niqāb?
(Edit: some commentators point out some supporters might even want to ban the hijab, but I've never seen that being proposed by established parties; my question is purely about burqa vs. niqāb)
¹Two months after writing the question, I saw a woman (presumably) in a burqa for the first time.