The potential impact of President Donald Trump's budget proposal, which was unveiled Tuesday, set the mayor off and had him once again denouncing the New Yorker in the White House. NY1's Grace Rauh filed the following report.

In between an Arthur Avenue bakery stop and a cheese-filled visit to nearby Mike's Deli, the mayor turned his attention to more serious matters: President Donald Trump's proposed budget. 

"It is very clear a national fight is about to begin," Bill de Blasio said.

At a sidewalk news conference on the Bronx's famous Italian shopping strip, de Blasio detailed the potential impact on the city. The NYPD's counterterrorism work, for one, is projected to lose $190 million.

"It is a tragic irony that the president proposed massive cuts to homeland security literally the same day as a horrendous terror attack in England," de Blasio said.

De Blasio says the president's proposed $600 billion in national cuts to Medicaid means 125,000 children in New York would lose their health insurance or have their coverage cut back severely.

"It is not an overstatement to say that some children will die because of this," de Blasio said.

The city's public housing system would see $300 million in capital funding disappear, the mayor says.

The president's budget also slashes funding for food stamps. There are 1.7 million New Yorkers on food stamps, including 500,000 children. 

"This is why I think President Trump is going to find himself in a lot of trouble," de Blasio said.

The mayor's week in the Bronx has felt like an extended campaign stop, with constituent meet-and-greets, photo-ops at neighborhood businesses and even a visit to a senior gala in Throggs Neck.

Republican mayoral candidate Paul Massey popped up in the borough.

"De Blasio says the city is safe. But in the south Bronx, there were over 2,000 murders, rapes, assaults and robberies in the last year," he said.

The mayor's re-election prospects look very strong at this point. Having Trump in the White House has arguably helped him the most, even more than an extended stay in the Bronx.