I do want more controls over entry into the U.K.
Also I personally would wish control at border between NI and the ROI, but I have to accept the Good Friday Agreement was for open border to trade (to some extent). Not that I have any great love for that so called agreement though.
[And obviously if we follow the agreement, we must then not allow a border in Irish Sea].
So that is why just about everyone , including all political parties are agreeing no checks on border. Only the mischief makers have been talking about imaginary checks - including that Irish Prime Minister repeatedly telling lies.
The Irish border has always been open anyhow and ironically there has been a political and financial border and this remains. Different laws, currency, VAT, etc.