Identifying the key issues focusing on the costs and benefits of immigration in developed countries

The present paper aims to acquaint concisely about the main issues surrounding the theme "immigration" founded in the literature. This acquaintance is ensured through first (comprising the first part of the corpus), an overall focus on the question of assessing on the one hand the costs and on the other hand the benefits of immigration, through the exploitation of many theories and arguments each being illustrated with specific examples of various developed countries – thus giving a frame for intra and inter-continental comparisons and analysis. Second (comprising the second part of the corpus), this acquaintance is ensured through proceeding to the evaluation and comparison between costs and benefits – by presenting new arguments - in order to seize objectively whether costs overweight benefits or whether not.