The phrase "assert support" is correct and usable in written English.
It can be used when you want to emphasize or declare the backing or endorsement of a particular idea, action, or individual.
Example: "In her speech, she chose to assert support for the new policy, highlighting its potential benefits for the community."
Alternatives: "declare backing" or "affirm assistance".
He has been reluctant to assert support for the agreement publicly because labor, which has endorsed him, so strongly opposes it.
Bergner said that Mashadani was also an intermediary between Masri in Iraq and bin Laden and Zawahiri, whom the Americans assert support and guide their Iraqi affiliate.
And it was recently announced that CEO Jeff Immelt is headed to India again this month, in part to assert support for manufacturing in the country.
Had he ceased the rampant shelling of his cities and withdrawn his forces the U.S. could then continue to assert support for the Annan plan to end the violence and facilitate a dialogue between the regime and the Syrian opposition and that this was the best course.
Republicans who asserted support for climate change legislation or the seriousness of the climate threat saw their money dry up or, worse, a primary challenger arise.
The presence of this key with a non-empty value indicates that the KDC asserted support for FAST (see RFC 6113) during the initial authentication, using the negotiation method described in RFC 6806 section 11.
Other state leaders have asserted support for the organization, but stopped short of vowing funds.
The bill also asserts support for statehood for the District of Columbia, protects Native American voting rights and the right to vote in U.S territories.
That would force Democrats to assert their support for the contentious accord, a vote Republicans hope will be more politically costly than the originally planned vote on a resolution disapproving of the nuclear deal.
This is reinforced by the fact that all major western governments and most mainstream political forces continue to assert their support for Israel and what it purportedly represents, regardless of its actions – even when they fly in the face of their stated values.
