I'm the less nationalistic person you'll ever find. I couldn't care less about Malvinas (Falklands), and in fact I think they should leave the kelpers alone, and insisting that the Malvinas belong to Argentina (something that is questionable even from a juridical point of view) is an act of imposition from the Argentine government on the population of that island who hate us (with very good reasons). There are certain things, though, for which I am proud of my country. A female president (even if I don't like her) is one of them. Federal same-sex marriage law is another one. A very progressive Supreme Court is a third reason. The fact that Argentina (or certain organizations) is an example of a country that pursued justice for the crimes committed during the dictatorship, no matter the setbacks and obstacles, is an additional one. Yesterday, while chatting with my father, I realized of another reason why my country makes me proud: it is probably the country in the world with the most lax attitude towards immigration. That doesn't mean that immigrants (specially if their skin is darker than that of a middle class porteño) don't face racism and xenophobia in Argentina. They do, and I am certainly not proud of that. How prevalent or not it is is usually tied to the whole economic climate. But it can be nasty, there is no doubt in that.
Regardless (and this is not an attempt to dismiss the issue of racism and discrimination in Argentina), mostly anybody who decides to move to Argentina (legally or illegally) gets their legal residence after a few years. There is an amnesty law to regularize illegal immigrants once or twice every decade. Even when there are economic problems and xenophobia rises, nobody questions these amnesty laws. Compared to the United States and, above all, Europe, I find the country's attitude enlightened. And it makes me very proud to be a citizen of a country that still has an open door policy.