A problem that i think indirectly contributed to the war on terror, the war in iraq, the wests presence in the middle east, our stringent and inwavering support of israel etc.....
This is a loaded question. But lets say i agree that its a "problem", then yes, all illegal immigration by definition would inherently increase the population and since mammals need food it would also reduce resources. But enough with the semantics, I will try to respond to what i think you are getting at and then spou off as usual....
the illegal immigration "problem" is the UK, i think, will prove much more detrimental because of the escalating problems in the middle east and the nature of the threat. in the UK you have muslims entering a christian/atheist nation. the radicals there are calling for revolution and instituting sharia law IN THE UK. On the other hand in the US, we have our christian brothers from the south coming to the US to be a part of our economy. obviously not all want to assimilate, but they certianly arent pressing any radical changes because we are already very similar in our christian value system. i would much prefer christian immigrants from one country than muslim immigrants from several.
My main problem with illegal immigration from mexico isnt the mexicans, its the national security threat that is posed when we realize that if malnourished uneducated peasant worker from oaxaca can WALK into our country, then certianly college educated oil funded radical muslims from all over the world will have no problem doing the same. in fact, the US has already been compromised. we admit that there is at least one suitcase nuke in the US. we admit that we dont know who is coming over the southern border. we admit that we have middlea easterers apprehended on the souther border as evidenced by them carrying the koran....are the people terrorists? i dont know, and thats precisely the point.