The US Supreme Court’s decision to uphold President Trump’s travel ban – more honestly a Muslim ban – naturally and rightfully raises to prominence again the question of where responsible scientists should hold their international conferences. We may soon see renewed calls to boycott US-based conferences, in solidarity with the many scientists around the world who can no longer attend conferences held in the US. But whether or not an outright boycott may be warranted, responsible scientists clearly have some choice in where to organise future conferences.
Many scientists are, I think rightly, suggesting that we should move more, if not most, of our international scientific conferences outside the US. There is some evidence that this is already happening. Against this suggestion, however, I have often heard the objection that doing so “penalises people from Muslim-majority countries already in the United States, who are now effectively stuck there”.