On CNN this morning, Trump campaign national spokeswoman Katrina Pierson claimed that Trump "hasn't changed his position on immigration, he's changed the words that he is saying."

What did Pierson mean by this? Here are three possibilities:

1) It might have been a bit of misspeak from a communications specialist for whom miscommunication has become a specialty.

2) It might have been an attempt to say that Trump is trying to use softer or more nuanced language to describe an immigration proposal that hasn't changed.

3) It might have been an admission that, despite a change in rhetoric and tone, Trump isn't serious about altering his policy proposals on immigration — that he is in effect lying when he says he will reconsider his previous position of deporting all illegal immigrants.

The public's image of Trump is as an extreme immigration restrictionist, but there have always been discrepancies between the things Trump has said at various times on the hustings and in debates, interviews and policy papers. Trump's immigration proposals have been described in recent days as "murky," "hopelessly muddled" and "a mess."

Nobody seems to know what a Trump immigration reform plan would look like, perhaps least of all the candidate and his top spokeswoman.

Daniel Allott is deputy commentary editor for the Washington Examiner