Immigration law in USA has been constantly in  debate from long time. And there are many changes that are being  constantly made with the changing needs. This is all because the land is  looked at by the people as heaven and as land of opportunities. People  from all over the world go in search of job, good education and  permanent employment. And once they go there, they change their plan to  settle down. This is one of the root causes for the increase in  population in USA. Also, this leads to various other social and economic  problems like unemployment. 
  One more thing  is that many persons who immigrate into USA come with a non-immigrant  visa as a tourist and at a later point of time get a job and settles  down illegally. To avoid all this, the immigration laws  are made stricter than before. Various ways in which fraudulent  activities are done are identified and the acts are passed accordingly.
  Obama,  as a president has also played an important role in change of such  immigration Law. It was found that proper channeling of immigration law will be the only way to solve many other problems which arises indirectly due to this.  
  Deporting  of illegal immigrants to other countries who committed crime is one of  the measures that were taken during his period. But Obama, when asked to  share his view told that this not the only solution for the illegal  immigration and settlement of large number of population. He also  promised to resolve this issue by passing effective acts and bringing  about great reform in the immigration process. But the deportation of  illegal immigrants without any crime records can be avoided easily by  applying for a work permit.
  This announcement  made by President Obama, on the deportation of undocumented or illegal  migrants with criminal records, is invited by a large group of  population. But on the other side there is also threat for his  presidential post in the next election, since one group of people who  are consistently deported, have raised a black flag against him and has  challenged the government regarding the winning of the party in the next  election.
  But many Native Americans who pay  tax feel this is a welcome relief to them all. This is because, they put  forth their argument that if large number of people go on settling  illegally in the country, then the burden not only increases for the  government buy also for them individually. They believe that the  undocumented immigrants make all use of their tax money in all the  public facilities provided.
  This reform  according to Obama is the one based on economic imperative. And yes,  this is true and accepted by almost all the middle class Americans.  Also, measures are being taken to stop further entry of illegal  immigrants, especially through land. Hence the borders that are shared  with other neighboring countries are guarded severely, as to avoid entry  of any illegal immigrant. 
  Thus, the measures  took by Obama government is invited by large number of population;  there are also a group who still oppose it.