According to drafts of two memos, U.S. President Donald Trump is planning to direct immigration agents to greatly expand the categories of immigrants they target for deportation.

The drafts were obtained by Reuters on Saturday.

Two sources familiar with the plans said the documents have been approved by Secretary of Homeland Security John Kelly, but are under final review by the White House.

They are expected to be released to U.S. Immigration and Customs Enforcement (ICE) and Customs and Border Protection (CBP) early next week.

Under the orders, hundreds of thousands of people would face expedited removal proceedings, including those that had not been prioritised for deportation under former President Barack Obama.

The memos are guidance to instruct agents in the field to implement two executive orders signed by Trump on Jan. 25 intended to deter future migration and drive out more illegal migrants from the U.S.