Definition: In this task, you need to generate an appropriate title for the given summary of some paragraph. The generated title must be short and should include the main topic of the given text. Your summary should be less than 20 words long.
Input: President Donald Trump's travel ban on 26 European nations has come into force in the US, as part of a contingency plan to tackle the coronavirus crisis.

Coronavirus: US travel ban on 26 European countries comes into force