Donald Trump told a crowd of supporters on Tuesday that he does not think that people who were born to undocumented immigrants in the U.S. are citizens of the U.S.

Trump said they did not think they have citizenship and if you speak to good lawyers, many agree.

He said the country needed to start taking back its country. Our country is on its way to hell, said the Republican presidential candidate who is leading his party in most polls as of late Tuesday night.

During an interview on Fox News, Trump added that he would test it in the U.S. court system.

Trump last week called for deporting all of the undocumented immigrants that live in the U.S. allowing only the good ones to return through a legal process that would be expedited.

Trump in is interview said that what takes place is that women in Mexico are pregnant and before giving birth they cross over into the U.S. to have their baby and lawyers have told him that would not hold up in a court of law.

Trump announced in his proposal for his policy for immigration that was released this past Sunday that he wants to put an end to birthright citizenship thus preventing future immigrants that are undocumented from giving birth to a citizen of the U.S. simply by being on U.S. soil.

The majority of legal scholars that have been questioned about the birthright citizenship think it is one of the constitutional rights from the 14th Amendment.

However, Trump as well as other conservatives suggested that birthright citizenship would be able to be ended by a simple passage of a law by Congress that defines the clause in the 14th Amendment of “and subject to the jurisdiction thereof.”

Some other GOP presidential candidates have joined the call by Trump for ending the birthright citizenship, but none thus far has made the suggestion of doing so retroactively and stripping American citizenship from certain individuals.