Prior to its dissolution, this district was the last remaining entity in Belgium that did not coincide with provincial borders, and as such had been deemed unconstitutional by the Belgian Constitutional Court. The district was a conflict issue for several years, and a major political problem in the cabinet formation crisis of 2007–2008. In July 2012, following the 2010–2011 Belgian government formation, Brussels-Halle-Vilvoorde was split into two parts as part of the sixth Belgian state reform.