The 18th of December 2015 the Swedish parliament approved a change in migration policy, allowing for the government to implement ID- controls at the Swedish border. The policy change was put forward in a, for Sweden, unusual way in that, that it happened quickly, deviated from standard procedure and represented a different stance than the one previously held by the government. By applying an evolved version of the multiple streams framework, originally put forth by Kingdon (2003), I seek to find an explanation for why this policy change occured. A description of the different components of the theoretical framework, as they appear in this specific case, is provided through an analysis of different kinds of government publications and documents, along with articles from the press and public opinion polls. The results of the study indicates that a change in the problem stream opened a policy window of oppurtunity for the government, in the form of a policy entrepreneur, to push for their policy solution, in adherence to the change in the national mood. The study further points to a discussion concerning the salience of this kind of theoretical contextualisation in cases like this one.