The Trump administration is sticking by its zero-tolerance policy as Republicans in the House weigh new legislation to deal with the crisis at the border.

Protests are expected to continue this week against the separation of more than 2,000 immigrant children and their parents.

Despite an executive order signed last Wednesday calling for families to be detained together, Attorney General Jeff Sessions has continued to defend the Trump administration's strict immigration enforcement.

"We are going to continue to prosecute those adults who enter here illegally," says Sessions. "We are going to do everything in our power, however, to avoid separating families."

Critics say President Trump's executive order to stop separating the children does nothing to address the children who have already been separated from their parents.

So far, the Department of Health and Human Services says more than 500 children have been reunited with their families.

Over the weekend, some lawmakers from across the country visited the remaining children being held at a facility in Texas.

House Republicans plan to vote this week on a broad overhaul of the U.S. immigration system. While aides say that will fail, the House is almost certain to move on a more-tailored effort to address family separations.

The Trump administration says parents are being offered the option to sign voluntary departure orders to speed up their cases. They are being told they will be reunited with their children before they are deported.