Trump, who learned about the strong May jobs report Thursday night, tweeted Friday morning that he was "looking forward to seeing the employment numbers" due to be released by the Labor Department about an hour later.
The latest gains were in retail trade, healthcare and construction, and wage growth - which has been slow since the end of the recession - picked up modestly. Trump previewed this month's strong report with a tweet, so if in upcoming months he doesn't say anything before the report is released, people could panic that the report will be weak and the market will plunge.
Remittances, one of Mexico's top sources of foreign currency, rose almost 18 percent in April, year on year, to $2.72 billion, the highest monthly total in records going back to 1995, central bank data showed.
"It's a judgment call", Kudlow said.
Tony Fratto, a Treasury Department official who worked in George W. Bush's administration, said that while not illegal, Trump's tease could be deemed inappropriate because "you want market participants to get their data from their government in predictable, official ways, not haphazard ones". Now, there's no law against that, but there is a federal rule dating back to 1985 that says: "All employees of the Executive Branch who receive pre-release distribution of information and data estimates. are responsible for assuring that there is no release prior to the official release time".
The White House press secretary, Sarah Huckabee Sanders, told CNBC the tweet was acceptable because the president "didn't put the numbers out".
A booming jobs report and signs the economy is expanding at a healthy pace despite global trade disputes proved too much for President Trump to keep quiet about Friday. "He likes to tweet", Kudlow told Fox Business.
Jason Furman, who chaired the Council of Economic Advisers in the Obama administration, said he anxious the decision would introduce instability into markets and appear to politicize statistics.
"He simply ignored the wall", New York University presidential historian Timothy Naftali said of Trump's post Friday.
Because the president would be briefed on the numbers ahead of time, his decision to promote the announcement gave rise to accusations of "market manipulation". While "markets are always trying to get an edge", investors who responded to every one of the president's tweets "probably would have lost money", he added. Last year, in a White House meeting with Russia's foreign minister and ambassador, he revealed highly classified information about a top-secret Israeli military operation (he was in the process of bragging to the Russian officials about the quality of his intelligence reports). However, given the headlines that swirled around financial markets Friday - including the USA slapping tariffs on allies, and new developments in Italy's political crisis - Trump's tweet "didn't set off a firestorm of trading activity", Rupkey added.
Republicans in Congress showed no immediate interest in looking into Trump's handling of economic data.