Sitting in the Chamber late on Monday afternoon for the Lords debate on the UK-Rwanda treaty, I was impressed by the standard of oratory. Most of the best speeches came from those – Lords Goldsmith (the Labour one), Kerr of Kinlochard, Anderson of Ipswich – who argued that the treaty was not, in itself, proof of the government’s contention, which the Safety of Rwanda (Asylum and Immigration) Bill seeks to turn into law, that Rwanda is now a safe country.