Security has since been significantly tightened at the building.

The airport checkpoint screening has been significantly tightened since 2001.

As controversy and allegations on both sides increased, the gap between the candidates tightened significantly.

In the last year, she said, the commission has adopted rules that "significantly tighten" the wiggle room for abuse.

And with subprime lending standards tightening significantly, fewer people qualify for them.

Within the last several years, both the House and the Senate significantly tightened their gift regulations, limiting gifts to $50 in value.

For the borrowers of these mortgages, it may become more difficult to refinance if lending standards are tightened significantly.

It significantly tightened a loophole that had permitted them to delay paying taxes on profits until a program was completed.

Credit was significantly tightened and state-run enterprises were put on notice that the days of easy loans were over.

State authorities significantly tightened their perimeter around the Republic of Texas encampment late last night, increasing the pressure on the group's leader.