'squarely oppose' is correct and usable in written English.
It means to strongly disagree or refute something. For example, one might say, "I squarely oppose the mayor's plan to build a new park in the city centre."
Both are now severely critical of the Bush administration, and one has squarely opposed the invasion.
A simple interpretation of the economic history suggests that Smith's ruthless advocacy for free markets was squarely opposed to regulation-heavy mercantilist doctrine.
Deniz Baykal, the main opposition leader, is in favour.But the American defence secretary, Robert Gates, said this week that the United States was squarely opposed to unilateral Turkish action, which would destabilise the only calmish bit of Iraq.
Geisbert is squarely opposed to the idea, because he says there isn't enough evidence that the drugs would do any good.
His latest remarks put him squarely on record opposing the administrative and electoral means by which Mr. Putin has ensured that his circle will remain in power, and calling for more strict civilian control over Russia's elections.
Though several Christian denominations, including the Episcopal Church and the Presbyterian Church (U.S.A)., have affirmed same-sex marriage in recent years, the Southern Baptist Convention has been squarely and unwaveringly opposed to anything other than heterosexual marriage.
They all oppose the embargo, which puts them squarely in line with the stated desire of Cuban officials, but also with a growing swath of the 1.2 million Cuban-Americans in the United States.
In their appeal, lawyers for Mr. Bruno said that during his trial, federal prosecutors focused squarely on nondisclosure as opposed to alleged kickbacks and bribery.
Mr. Romney's embrace of a strategy that would induce illegal immigrants to leave voluntarily places him squarely on the side of groups that want to reduce legal immigration and vigorously oppose any plan to give legal status to illegal immigrants, which they reject as amnesty.
Most Republican hopefuls stand squarely in the traditional camp of defining marriage as between a man and a woman, and they oppose efforts, such as the one looming before the Supreme Court, to legalize same-sex marriage nationwide.
