You can sign the letter here.
“On 27 January 2017, President Donald Trump signed an Executive Order putting in place a 90-day ban that denies US entry to citizens from seven Muslim majority countries: Iran, Iraq, Syria, Yemen, Sudan, Libya and Somalia. So far, the ban includes dual nationals, current visa, and green card holders, and those born in these countries while not holding citizenship of them. The Order also suspends the admittance of all refugees to the US for a period of 120 days and terminates indefinitely all refugee admissions from Syria. There are indications that the Order could be extended to include other Muslim majority countries.
The Order has affected people with residence rights in the US, as well as those with rights of entry and stay. Some of those affected are fleeing violence and persecution, and have been waiting for years for resettlement in the US as refugees. Others are effectively trapped in the US, having cancelled planned travel for fear that they will be barred from returning. The order institutionalises racism, and fosters an environment in which people racialised as Muslim are vulnerable to ongoing and intensifying acts of violence and hatred.
Among those affected by the Order are academics and students who are unable to participate in conferences and the free communication of ideas. We the undersigned take action in solidarity with those affected by Trump’s Executive Order by pledging not to attend international conferences in the US while the ban persists. We question the intellectual integrity of these spaces and the dialogues they are designed to encourage while Muslim colleagues are explicitly excluded from them.”