Read the docs at @BuzzFeedNews: https://www.buzzfeed.com/emmaloop/trump-campaign-reassured-canadian-officials-that-he-could-ev?utm_term=.ljAoO1y7vV#.vsZ4BDZRAp …pic.twitter.com/mcfuz3j9zm
You can add location information to your Tweets, such as your city or precise location, from the web and via third-party applications. You always have the option to delete your Tweet location history. Learn more
I guess the use of the conditional is the clue here
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.