President Donald Trump on Wednesday signed an executive order to build a border wall between the United States and Mexico — keeping to his signature campaign promise.

CNN reports that in total, Trump signed two executive orders that will reshape U.S. immigration policy. The orders demand enforcement of a border wall, an increase in border patrol and enforcement officers, stripping sanctuary cities of federal grants and implementing a new system that targets more illegal immigrants for deportation.

While speaking at the Department of Homeland Security headquarters in Washington, D.C., President Trump told the crowd, "Beginning today, the United States of America gets back control of its borders," according to CNN.

But the border wall and subsequent immigration policy — announced just days into his first week in office — came more quickly than some expected. The executive order also didn't explain how or who would pay for the wall or its planning and construction. Trump told ABC News that planning is "starting immediately."

CNN reports Trump has said in the past that Mexico will reimburse U.S. taxpayers for the construction costs — an assertion the Mexican government has denied.

On Wednesday, Trump didn't have the financials figured out, but he went on to tell ABC News, "I'm just telling you there will be a payment. It will be in a form, perhaps a complicated form."

Besides the wall, Trump's executive orders seek to target the estimated 11 million undocumented immigrants living in this country, as reported by the Washington Post.

CNN reports an additional 5,000 border patrol officers will be deployed, as will 10,000 new Immigration and Customs Enforcement officers, who will be tasked with carrying out deportations. Trump also called for increased detention centers. These orders, however, are tied to Congressional approval and funds.

The president also targeted sanctuary cities, which ignore federal immigration laws and allow illegal citizens to reside there, to comply or have their federal grants stripped away.

California, which has more than 40 sanctuary cities, already has jurisdictions refusing to comply despite the threat. "We pay our fair share, and that funding should go to the city regardless of whether the city is a sanctuary city or not," Los Angeles city councilman Cristian Markovich told the LA Times.

This immigration policy also might not be the last we see come out of the White House this week. The Washington Post reports Trump aides told them "directives" targeting refugees and immigrants from Muslim countries could also be on their way. ​