Leaked maps revealed proposals to shrink boundaries at Bears Ears national park from 1.3 million acres to 201,000 acres while Grand Staircase Escalante will be slashed by half to just under one million acres.
Mr Trump will travel to Salt Lake City to make the announcement at a rally on Monday. "They don't know your land". Previous presidents have reduced the size of national monuments more than a dozen times.
The move will likely trigger lawsuits from activists and environmental groups, who see this move as an attempt to give public land to private corporations. He cited the 1906 Antiquities Act, which past Presidents have used to designate National Monuments, to scale back instead.
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There are now more than 125 designated national monuments, encompassing everything from a coral reef in the Caribbean to an African burial ground in New York State to a barrier island off the coast of Alaska. Trump is the first president to shrink a monumentin decades.
"Trump's unprecedented, illegal action is a brutal blow to our public lands, an affront to Native Americans and a disgrace to the presidency", said Randi Spivak, the public lands program director at the nonprofit Center for Biological Diversity.
Co-op sells food past best-before date to curb waste
Joint chief executive at the East of England Co-op , Roger Grosvenor, said: 'We are committed to reducing waste in our business. Taking this simple step will add three days to the life of many foods, according to the official food waste advisors, WRAP.
Ben Stokes struggles on Canterbury debut
England all-rounder Ben Stokes scored two and failed to take a wicket on his Canterbury debut in New Zealand's Ford Trophy. Canterbury coach Gary Stead said: "It's just general stiffness". "I think if anything he tried too hard".
2017's one and only supermoon soars over Washington
The moon gained the title supermoon because it was not only full, but also passing Earth at about its closest point in its orbit. At 3.47pm - the exact moment of full moon - it was 222,761 miles from Earth, closer than the average distance of 238,900 miles.
Airline crew 'saw North Korea missile'
Despite the close proximity to these tests, Cathay Pacific is not planning on changing its routes any time soon. The Cathay Pacific flight took off from San Francisco and was bound for Hong Kong.