REUTERS/Joshua Roberts
Such a move would break Trump's pledge that Mexico would pay for the wall, which was central to the president-elect's campaign.
The reports said Trump and House Republicans were developing plans to fund the border wall using taxpayer money through a 2006 law enacted by President George W. Bush that provided for over 700 miles of barriers along the southern US border.
CNN cited House Republican officials who said the plan could be taken up as early as April.
The proposed border wall - and Trump's assertion that Mexico would pay for it - was one of his principal campaign pledges.
Trump flew ;to Mexico in August for talks with President Enrique Peña Nieto, but the affair generated some fallout afterward, when the two publicly disagreed about the wall.
On his return to the US, Trump claimed he and Peña Nieto never discussed payment. Peña Nieto immediately fired back in Spanish: "I repeat what I told you personally, Mr. Trump: Mexico will never pay for a wall."