A refugee crisis refers to a movement of "large" groups of displaced people, and may or may not involve a migrant crisis. The US government's legal obligations inadvertently created the 2014 American immigration crisis. The crisis developed because of unaccompanied children who do not have a legal guardian to provide physical custody (USA ratified the Convention on the Rights of the Child), and care quickly overwhelmed the "local border patrols" creating a migrant crisis. Push-Pull view: The "refugee crisis" is a humanitarian one for those adopting the "Push" factors as main cause, while they acknowledge that reasons for migration may be mixed, even the refugees as weapons. For those focusing on "Pull" factors, the "migration crisis" has its roots in border enforcement policies (Immigration system) that were perceived as not sufficiently strict and the need for cheap workers for US business (family separation policy), severe (Operation Streamline), or careful (catch & release) by potential migrants. Compared to refugee crisis (refugee is a refugee), migrant crises also have a separate or distinguish between the “deserving” refugee from the “undeserving” migrant and play into fear of cultural, religious, and ethnic difference in the midst of increasing intense, excessive, and persistent worry and fear about everyday situations and lacking in predictability, job security, material or psychological welfare for many in Europe (such in closure of Green Borders).
