UPDATE 1-Health, climate change vie for boost in US Congress

* Two top priorities for Obama see progress

* Enacting healthcare reform seen more likely this year

* Democrats still face tough fights on both (Adds details on Sen. Kennedy legislation in paragraph 14)

By Richard Cowan

WASHINGTON, June 7 (Reuters) - Barack Obama may be pressuring Congress as no U.S. president has for decades as he aims to get two big domestic goals passed this year -- reforming health care and fighting global warming.

"It's not impossible to do both, but that would be more than a Congress has ever given a president, maybe since the first First 100 Days," said Brookings Institution senior fellow Stephen Hess, referring to the start of Franklin Roosevelt's "New Deal" presidency in 1933.

A further time constraint may be the pressures imposed by the campaign next year for congressional elections in November when the seats of all 435 U.S. representatives and a third of the 100 senators are up for grabs.

Congress in the past often has shown itself to be unable to handle more than one big issue a year, but Obama and his fellow Democrats, who control the Senate and House of Representatives, see a window of opportunity this year to pass two long-standing Democratic goals.

Expanding health care to the uninsured and reducing pollution associated with climate change would have an economic impact on nearly every consumer and most U.S. companies -- from health insurers and utilities, to oil refineries, ailing automakers, steel manufacturers and small businesses.