CLEAN : Hungarian govt: fence necessary but not sufficient

The Hungarian Government has decided to erect a security fence along its southern border with Serbia to combat the influx of illegal migrants entering Hungary and the European Union. This measure, while necessary, may not be entirely sufficient. Other EU countries like Greece, Bulgaria, and Spain have implemented similar measures. The number of illegal migrants has grown exponentially, with Hungary seeing a significant increase in recent months. The fence will adhere to European and international treaties. The migration issue presents new challenges, with people from different civilizations attempting to enter Europe illegally, causing unresolved issues that Western Europe has faced for decades. Hungary aims to prevent these problems from occurring within its borders.

What measures have other European countries taken against illegal migration?

What challenges does the influx of illegal migrants pose to Hungary and Europe?