President Donald Trump on Monday presented a list of immigration policy goals that he said are a “must.”

We must have Border Security, get rid of Chain, Lottery, Catch & Release Sanctuary Cities - go to Merit based Immigration. Protect ICE and Law Enforcement and, of course, keep building, but much faster, THE WALL! — Donald J. Trump (@realDonaldTrump) July 30, 2018

On Sunday, Trump said he would be willing to shut down the U.S. government if Democrats refuse to vote for changes that Trump seeks to the U.S. immigration system.

“I would be willing to ‘shut down’ the government if the Democrats do not give us the votes for border security… We need great people coming into our country,” Trump tweeted.