In short, they are too different, although many countries are included in both. The EU is a political and economic union, while the Schengen area allows the free movement of people between the participating countries. The Danish territories are not part of the European Union or the Schengen area, and visas for Denmark are not automatically valid in these regions. However, in both areas, there is no border control for arrivals from the Schengen area and air or sea carriers are responsible for carrying out pre-board document checks, as is the case for travel within the Schengen area. Citizens of EFTA countries can travel to faeces and Greenland with a passport or ID card, while citizens of Denmark, Finland, Iceland, Norway or Sweden can use any acceptable identification (for example. B driver`s licenses or bank cards that are not recommended, as planes could be diverted to Scotland in case of fog).   The Swiss federal government has recently undergone several major political reversals, but with regard to specific agreements with the EU on the free movement of workers and the sectors of tax evasion, the Swiss banking system has been dealt with. This was the result of the first Ue-Switzerland summit in May 2004, during which nine bilateral agreements were signed. Romano Prodi, former president of the European Commission, said the agreements had “brought Switzerland closer to Europe.” Joseph Deiss of the Federal Council said: “We may not be at the centre of Europe, but we are definitely at the heart of Europe.” He continued: “We are entering a new era of relations between our two entities.” [update] from 2015, Andorra, Monaco and San Marino negotiated an association agreement with the EU.
Andorra`s ambassador to Spain, Jaume Gaytén, said he hoped the agreement would include provisions that would make states associated with the Schengen agreement.  The seven agreements are closely linked by being obliged to enter into force simultaneously and no longer apply six months after receiving a notification of non-renewal or termination of one of them.  The influx of refugees and migrants from Greece to Croatia via Northern Macedonia and Serbia, and then to the current Schengen Member States such as Slovenia, Austria and Hungary in the context of the 2015 European migration crisis, has led some to question whether there would be a political consensus needed to further expand the Schengen area.     In September 2015, Hungary threatened to veto Croatia`s accession to the Schengen area after allowing migrants to transit to Hungary.  Slovenia has proposed vetoing Croatia`s accession to the Schengen area because of its border dispute.  In 2009, the Swiss voted in favour of extending free movement to Bulgaria and Romania by 59.6% to 40.4%.  While the 2004/38/EC European Directive on the right of free movement and residence does not apply directly to Switzerland, the bilateral agreement between Switzerland and the EU on the free movement of persons has the same rights for both Swiss citizens and eee and their family members.  About 1.7 million people cross a European border to work every day, and in some regions they account for up to a third of the labour force.