Half are opposed to Turkey, which has a long and porous border, becoming a member of the EU.
But did the government agents, in inducing him to commit a crime, step over some border, becoming instigators of actions that Mr. Mohamud would not otherwise have taken?
It is wrong to see the task as maintaining no border - the challenge is to stop this border becoming significantly harder.
In his letter, Johnson tells May that there could be some wiggle room, since all Britain promised was to "stop this border becoming significantly harder".
By then, his wing of the drug cartel appeared to collapse, and his son, Dámaso López Serrano, turned himself in at the US-Mexico border, becoming the highest-ranking member of a Mexican cartel to surrender to US authorities.
The EU agriculture commissioner, Phil Hogan, a former Irish government minister, has even suggested that Brexit would lead to a "fortress Northern Ireland", with towns along the Irish side of the border becoming the "the new Calais" for those hoping for a backdoor into the UK.
The ads come as political rhetoric has been examined for what some see as overt signs of classic anti-Semitism, with conspiracy theories about Jewish financier George Soros directing an "invasion" at the southern border becoming a prominent theme in conservative politics in recent weeks.
