Prime Minister Gillard has backed former Prime Minister Howard's policy on four vital issues which will figure prominently in the 2013 federal election, Australian Greens Leader Bob Brown said today.

Australian Greens Leader Bob Brown said the Gillard government should ensure the Parliament debates the US military build-up planned for the NT and the alternative of Australia charting an independent course in the Asia Pacific this century.

"President Obama, who was very warmly welcomed to our nation's capital, today delivered an important speech about America's increased involvement in the Pacific and the economic and military imperatives that lie behind the US plans for Australia," Senator Brown said in Canberra.

Australian Greens Leader Bob Brown spoke to 936 ABC Hobart's Leon Compton live from Canberra today about President Obama's visit, the expansion of Australia-US military ties and nuclear proliferation.

Australian Greens Leader Bob Brown spoke to 3AW's Tom Elliott today about Julia Gillard's dangerous move on uranium sales. They also discussed equal marriage and the upcoming ALP conference.

Australian Greens Leader Bob Brown said today the prospect of selling uranium to India will horrify many Australians and is a giant step towards another backflip by both major parties: hosting a global nuclear waste dump in Australia in the years to come.

As well as Prime Minister Julia Gillard's flouting of the Nuclear Nonproliferation Treaty, Senator Brown commented on the old parties' stance on equal marriage.

Australian Greens Leader Bob Brown said today the prospect of selling uranium to India will horrify many Australians.

"Julia Gillard and Tony Abbott agree on selling uranium to nuclear-armed India although the Australian people have had no say," Senator Brown said in Hobart.

"It's all about helping multi-billion-dollar mining corporations make more money, as Martin Ferguson would wish, at the expense of regional security. The government has removed the super profits tax from uranium."