I congratulate the hon. Gentleman on his election as Chair of the Northern Ireland Affairs Committee.
The Republic of Ireland has never indicated that it has any intention of sealing the border, but the hon. Gentleman is absolutely right. Despite the fun being poked at the suggestion, any hardening of the border will do two things: it will embolden Sinn Féin to campaign even harder for a border poll to change the constitutional status of Northern Ireland from being part of the United Kingdom to being part of a united Ireland; and, dangerously, it will embolden dissident republicans, whom the hon. Member for Strangford (Jim Shannon) mentioned. If there is any hardening of the border, any additional cameras or whatever, they will be emboldened to increase their violence, which is already unacceptable. It is lethal, and we do not want it to be renewed or encouraged in any way.