I think it's pretty much a given at this point that the election call will be made this weekend (Parliament is officially scheduled to return from prorogation on Monday), for a final voting date of the last week of April or first week of May.
The quick dash overseas is partly a reflection of the seriousness of the issues with the US, but it's also because he won't be able to do any foreign diplomacy once the election campaign starts. So, next week will start his cross-Canada tour.
