"TUBE UNION RMT confirmed today that driver members on the Piccadilly Line will be striking over a series of attacks on working conditions and staffing levels that have turned the line into a pressure cooker. RMT members will strike between 21.00 hours on Wednesday 11th July and 01.00 hours on Saturday 14th July 2018," the statement read.
According to the RMT, around 500,000 people use the Piccadilly Line daily. The line is a vital route connecting London and Heathrow Airport.
Trump's July trip to the United Kingdom will be his first official visit to the country since coming into office in early 2017. The US president's visit has been repeatedly delayed over opposition against it on the part of some UK officials and the public at large.