The wall and cutting off funding for Planned Parenthood for starters.
Trump made a major campaign promise on the Wall,
it was very popular here.
Many said he was lying at the time including Obama, now its time for him to prove he wasn't rather than tell congress to take the hit for more deficits or taxes.
Donald Trump announced Tuesday he would use a federal anti-terrorism surveillance law as a tool to force Mexico to pay for the border wall he has pledged to build on the U.S.’s southern border.
Trump outlined the steps his administration would undertake to compel Mexico to pay the U.S. “$5-10 billion” to fund a border wall in a memo his campaign released Tuesday morning — a plan that relies largely on threatening to bar undocumented Mexican immigrants in the United States from wiring money to relatives in Mexico.
Using a broad interpretation of the post-9/11 USA Patriot Act, Trump writes in the memo that he would threaten to issue new regulations that would compel money transfer companies like Western Union to verify a client's identity and legal status before authorizing a wire transfer
Donald Trump outlines plan to get Mexico to pay for border wall( By Jeremy Diamond, CNN April 5, 2016)