It's literally this simple. Integration has been a disaster to the extent that soldiers now patrol within the borders of France and Belgium.

The great opportunity-cost of integrating populations and monitoring them when it fails has clearly become too expensive and people are saying "enough".

Oddly, the EU doesn't seem to acknowledge the sentiment of the public and just keep hammering on about 'ever closer union'. Clarity from mainstream Parties on this issue alone would shrink the poll numbers of the Far-Right.

Fillon stance against migrants is very harsh and even harsher than the far-right on some aspects, apparently, having a hard stance on immigrants is not enough to prevent people to vote for the far-right.

Touché. Although the opponents in the campaign are mostly terrible. Even by French standards.

This is an issue. But it seems even the Europhiles are smarting up to it

It's easy to be "humanitarian" with somebody else's money and resources

It's actually not the spending of money I have issue with, though admittedly I don't know how big a part of the budget foreign humanitarian aid represents. It's the underhanded way in which immigration is being accomplished - Germany had "guest workers", which the government promised would return to their home countries. The U.S. had the Immigration and Nationality Act of 1965, which was promised wouldn't change the ethnic make-up of the U.S. Both promises were broken. I don't think anyone believes the current wave of refugees will ever leave - who would be willing to deport them, after they spend 10+ years in Europe, and raise children here who've never seen their 'home' country?

Consider this - despite graphic photos of drowned children, the funding of refugee camps on the other side of the Mediterranean was not exactly loudly promoted.